Write one question each for convergent, divergent, evaluation, and reflective questioning. Come up with your own examples; do NOT use the examples in the book.

Write one question each for convergent, divergent, evaluation, and reflective questioning. Come up with your own examples; do NOT use the examples in the book.

  Convergent “On reflecting over the entirety of the play … Read More...
Programming Assignment 7: Poker (5-Card Draw) II. Prerequisites: Before starting this programming assignment, participants should be able to: Apply and implement pointers in C Pass output parameters to functions Analyze a basic set of requirements and apply top-down design principles for a problem Apply repetition structures within an algorithm Construct while (), for (), or do-while () loops in C Compose C programs consisting of sequential, conditional, and iterative statements Eliminate redundancy within a program by applying loops and functions Create structure charts for a given problem Open and close files Read, write to, and update files Manipulate file handles Apply standard library functions: fopen (), fclose (), fscanf (), and fprintf () Apply and implement pointers 2-dimenional arrays Define and apply structs in C Compose decision statements (“if” conditional statements) Create and utilize compound conditions Summarize topics from Hanly & Koffman Chapter 8 including: What is an array? Distinguishing between single dimensional and 2-dimentional arrays What is an index? III. Overview & Requirements: Write a program that allows a user to play 5-Card-Draw Poker against the computer. Start with the following example code supplied by Deitel & Deitel (example code). This will help you get started with the game of Poker. Please read this site to learn the rules of Poker http://en.wikipedia.org/wiki/5_card_draw. Complete the following step and you will have a working Poker game!!! Adapted from Deitel & Deitel’s C How to Program (6th Edition): (1) In order to complete the game of 5-card-draw poker, you should complete the following functions: (a) (5 pts) Modify the card dealing function provided in the example code so that a five-card poker hand is dealt. (b) (5 pts) Write a function to determine if the hand contains a pair. (c) (5 pts) Write a function to determine if the hand contains two pairs. (d) (5 pts) Write a function to determine if the hand contains three of a kind (e.g. three jacks). (e) (5 pts) Write a function to determine if the hand contains four of a kind (e.g. four aces). (f) (5 pts) Write a function to determine if the hand contains a flush (i.e. all five cards of the same suit). (g) (5 pts) Write a function to determine if the hand contains a straight (i.e. five cards of consecutive face values). (2) (20 pts) Use the functions developed in (1) to deal two five-card poker hands, evaluate each hand, and determine which is the better hand. (3) (25 pts) Simulate the dealer. The dealer’s five-card hand is dealt “face down” so the player cannot see it. The program should then evaluate the dealer’s hand, and based on the quality of the hand, the dealer should draw one, two, or three more cards to replace the corresponding number of unneeded cards in the original hand. The program should then re-evaluate the dealer’s hand. (4) (10 pts) Make the program handle the dealer’s five-card hand automatically. The player should be allowed to decide which cards of the player’s hand to replace. The program should then evaluate both hands and determine who wins. Now use the program to play 10 games against the computer. You should be able to test and modify or refine your Poker game based on these results!

Programming Assignment 7: Poker (5-Card Draw) II. Prerequisites: Before starting this programming assignment, participants should be able to: Apply and implement pointers in C Pass output parameters to functions Analyze a basic set of requirements and apply top-down design principles for a problem Apply repetition structures within an algorithm Construct while (), for (), or do-while () loops in C Compose C programs consisting of sequential, conditional, and iterative statements Eliminate redundancy within a program by applying loops and functions Create structure charts for a given problem Open and close files Read, write to, and update files Manipulate file handles Apply standard library functions: fopen (), fclose (), fscanf (), and fprintf () Apply and implement pointers 2-dimenional arrays Define and apply structs in C Compose decision statements (“if” conditional statements) Create and utilize compound conditions Summarize topics from Hanly & Koffman Chapter 8 including: What is an array? Distinguishing between single dimensional and 2-dimentional arrays What is an index? III. Overview & Requirements: Write a program that allows a user to play 5-Card-Draw Poker against the computer. Start with the following example code supplied by Deitel & Deitel (example code). This will help you get started with the game of Poker. Please read this site to learn the rules of Poker http://en.wikipedia.org/wiki/5_card_draw. Complete the following step and you will have a working Poker game!!! Adapted from Deitel & Deitel’s C How to Program (6th Edition): (1) In order to complete the game of 5-card-draw poker, you should complete the following functions: (a) (5 pts) Modify the card dealing function provided in the example code so that a five-card poker hand is dealt. (b) (5 pts) Write a function to determine if the hand contains a pair. (c) (5 pts) Write a function to determine if the hand contains two pairs. (d) (5 pts) Write a function to determine if the hand contains three of a kind (e.g. three jacks). (e) (5 pts) Write a function to determine if the hand contains four of a kind (e.g. four aces). (f) (5 pts) Write a function to determine if the hand contains a flush (i.e. all five cards of the same suit). (g) (5 pts) Write a function to determine if the hand contains a straight (i.e. five cards of consecutive face values). (2) (20 pts) Use the functions developed in (1) to deal two five-card poker hands, evaluate each hand, and determine which is the better hand. (3) (25 pts) Simulate the dealer. The dealer’s five-card hand is dealt “face down” so the player cannot see it. The program should then evaluate the dealer’s hand, and based on the quality of the hand, the dealer should draw one, two, or three more cards to replace the corresponding number of unneeded cards in the original hand. The program should then re-evaluate the dealer’s hand. (4) (10 pts) Make the program handle the dealer’s five-card hand automatically. The player should be allowed to decide which cards of the player’s hand to replace. The program should then evaluate both hands and determine who wins. Now use the program to play 10 games against the computer. You should be able to test and modify or refine your Poker game based on these results!

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Explain the relationship between the physical environments and the types of cultures and societies that the various indigenous peoples developed — be sure to use specific examples. Why do you think some Native American societies formed large-scale societies, while most did not? What do the Native American stories in the History 10 Readings reveal about what they valued? (Be sure to refer to the documents by name in your work and explain how the story reveals what they valued. For example, you could say, “In the reading about the Creation of the World, the Zuni saw the importance of both men and women in the roles that Sky-father and Earth-mother play together in determining how their children will find their way in the world by . . . . ” And then use a relevant quote from the story to support your point. ) Unit 3: Unit 1.1: Native Americans – Unit 1 Threaded Discussion 1 You have now read and examined a variety of Native American cultures. Europeans referred to them as “savage” or “uncivilized.” But do cultural differences, shaped by the environments in which people found themselves, make a peoples savage or uncivilized? Unit 1 — Threaded Discussion 1

Explain the relationship between the physical environments and the types of cultures and societies that the various indigenous peoples developed — be sure to use specific examples. Why do you think some Native American societies formed large-scale societies, while most did not? What do the Native American stories in the History 10 Readings reveal about what they valued? (Be sure to refer to the documents by name in your work and explain how the story reveals what they valued. For example, you could say, “In the reading about the Creation of the World, the Zuni saw the importance of both men and women in the roles that Sky-father and Earth-mother play together in determining how their children will find their way in the world by . . . . ” And then use a relevant quote from the story to support your point. ) Unit 3: Unit 1.1: Native Americans – Unit 1 Threaded Discussion 1 You have now read and examined a variety of Native American cultures. Europeans referred to them as “savage” or “uncivilized.” But do cultural differences, shaped by the environments in which people found themselves, make a peoples savage or uncivilized? Unit 1 — Threaded Discussion 1

info@checkyourstudy.com Explain the relationship between the physical environments and the … Read More...
Assignment 9 Due: 11:59pm on Friday, April 11, 2014 You will receive no credit for items you complete after the assignment is due. Grading Policy Problem 11.2 Part A Evaluate the dot product if and . Express your answer using two significant figures. ANSWER: Correct Part B Evaluate the dot product if and . Express your answer using two significant figures. ANSWER: Correct Problem 11.4  A B = 5 − 6 A i ^ j ^ = −9 − 5 B i ^ j ^ A  B  = -15  A B = −5 + 9 A i ^ j ^ = 5 + 6 B i ^ j ^ A  B  = 29 Part A What is the angle between vectors and if and ? Express your answer as an integer and include the appropriate units. ANSWER: Correct Part B What is the angle between vectors and if and ? Express your answer as an integer and include the appropriate units. ANSWER: Correct ± All Work and No Play Learning Goal: To be able to calculate work done by a constant force directed at different angles relative to displacement If an object undergoes displacement while being acted upon by a force (or several forces), it is said that work is being done on the object. If the object is moving in a straight line and the displacement and the force are known, the work done by the force can be calculated as , where is the work done by force on the object that undergoes displacement directed at angle relative to .  A B A = 2 + 5 ı ^  ^ B = −2 − 4 ı ^  ^  = 175  A B A = −6 + 2 ı ^  ^ B = − − 3 ı ^  ^  = 90 W =  = cos  F  s  F   s  W F  s  F  Note that depending on the value of , the work done can be positive, negative, or zero. In this problem, you will practice calculating work done on an object moving in a straight line. The first series of questions is related to the accompanying figure. Part A What can be said about the sign of the work done by the force ? ANSWER: Correct When , the cosine of is zero, and therefore the work done is zero. Part B cos  F  1 It is positive. It is negative. It is zero. There is not enough information to answer the question.  = 90  What can be said about the work done by force ? ANSWER: Correct When , is positive, and so the work done is positive. Part C The work done by force is ANSWER: Correct When , is negative, and so the work done is negative. Part D The work done by force is ANSWER: F  2 It is positive. It is negative. It is zero. 0 <  < 90 cos  F  3 positive negative zero 90 <  < 180 cos  F  4 Correct Part E The work done by force is ANSWER: Correct positive negative zero F  5 positive negative zero Part F The work done by force is ANSWER: Correct Part G The work done by force is ANSWER: Correct In the next series of questions, you will use the formula to calculate the work done by various forces on an object that moves 160 meters to the right. F  6 positive negative zero F  7 positive negative zero W =  = cos  F  s  F   s  Part H Find the work done by the 18-newton force. Use two significant figures in your answer. Express your answer in joules. ANSWER: Correct Part I Find the work done by the 30-newton force. Use two significant figures in your answer. Express your answer in joules. ANSWER: Correct Part J Find the work done by the 12-newton force. Use two significant figures in your answer. Express your answer in joules. W W = 2900 J W W = 4200 J W ANSWER: Correct Part K Find the work done by the 15-newton force. Use two significant figures in your answer. Express your answer in joules. ANSWER: Correct Introduction to Potential Energy Learning Goal: Understand that conservative forces can be removed from the work integral by incorporating them into a new form of energy called potential energy that must be added to the kinetic energy to get the total mechanical energy. The first part of this problem contains short-answer questions that review the work-energy theorem. In the second part we introduce the concept of potential energy. But for now, please answer in terms of the work-energy theorem. Work-Energy Theorem The work-energy theorem states , where is the work done by all forces that act on the object, and and are the initial and final kinetic energies, respectively. Part A The work-energy theorem states that a force acting on a particle as it moves over a ______ changes the ______ energy of the particle if the force has a component parallel to the motion. W = -1900 J W W = -1800 J Kf = Ki + Wall Wall Ki Kf Choose the best answer to fill in the blanks above: ANSWER: Correct It is important that the force have a component acting in the direction of motion. For example, if a ball is attached to a string and whirled in uniform circular motion, the string does apply a force to the ball, but since the string's force is always perpendicular to the motion it does no work and cannot change the kinetic energy of the ball. Part B To calculate the change in energy, you must know the force as a function of _______. The work done by the force causes the energy change. Choose the best answer to fill in the blank above: ANSWER: Correct Part C To illustrate the work-energy concept, consider the case of a stone falling from to under the influence of gravity. Using the work-energy concept, we say that work is done by the gravitational _____, resulting in an increase of the ______ energy of the stone. Choose the best answer to fill in the blanks above: distance / potential distance / kinetic vertical displacement / potential none of the above acceleration work distance potential energy xi xf ANSWER: Correct Potential Energy You should read about potential energy in your text before answering the following questions. Potential energy is a concept that builds on the work-energy theorem, enlarging the concept of energy in the most physically useful way. The key aspect that allows for potential energy is the existence of conservative forces, forces for which the work done on an object does not depend on the path of the object, only the initial and final positions of the object. The gravitational force is conservative; the frictional force is not. The change in potential energy is the negative of the work done by conservative forces. Hence considering the initial and final potential energies is equivalent to calculating the work done by the conservative forces. When potential energy is used, it replaces the work done by the associated conservative force. Then only the work due to nonconservative forces needs to be calculated. In summary, when using the concept of potential energy, only nonconservative forces contribute to the work, which now changes the total energy: , where and are the final and initial potential energies, and is the work due only to nonconservative forces. Now, we will revisit the falling stone example using the concept of potential energy. Part D Rather than ascribing the increased kinetic energy of the stone to the work of gravity, we now (when using potential energy rather than work-energy) say that the increased kinetic energy comes from the ______ of the _______ energy. Choose the best answer to fill in the blanks above: ANSWER: force / kinetic potential energy / potential force / potential potential energy / kinetic Kf + Uf = Ef = Wnc + Ei = Wnc + Ki + Ui Uf Ui Wnc Correct Part E This process happens in such a way that total mechanical energy, equal to the ______ of the kinetic and potential energies, is _______. Choose the best answer to fill in the blanks above: ANSWER: Correct Problem 11.7 Part A How much work is done by the force 2.2 6.6 on a particle that moves through displacement 3.9 Express your answer to two significant figures and include the appropriate units. ANSWER: work / potential force / kinetic change / potential sum / conserved sum / zero sum / not conserved difference / conserved F  = (− + i ^ ) N j ^ ! = r m i ^ Correct Part B How much work is done by the force 2.2 6.6 on a particle that moves through displacement 3.9 Express your answer to two significant figures and include the appropriate units. ANSWER: Correct Problem 11.10 A 1.8 book is lying on a 0.80- -high table. You pick it up and place it on a bookshelf 2.27 above the floor. Part A How much work does gravity do on the book? Express your answer to two significant figures and include the appropriate units. ANSWER: Correct Part B W = -8.6 J F  = (− + i ^ ) N j ^ ! = r m? j ^ W = 26 J kg m m Wg = -26 J How much work does your hand do on the book? Express your answer to two significant figures and include the appropriate units. ANSWER: Correct Problem 11.12 The three ropes shown in the bird's-eye view of the figure are used to drag a crate 3.3 across the floor. Part A How much work is done by each of the three forces? Express your answers using two significant figures. Enter your answers numerically separated by commas. ANSWER: WH = 26 J m W1 , W2 , W3 = 1.9,1.2,-2.1 kJ Correct Enhanced EOC: Problem 11.16 A 1.2 particle moving along the x-axis experiences the force shown in the figure. The particle's velocity is 4.6 at . You may want to review ( pages 286 - 287) . For help with math skills, you may want to review: The Definite Integral Part A What is its velocity at ? Express your answer to two significant figures and include the appropriate units. Hint 1. How to approach the problem What is the work–kinetic energy theorem? What is the kinetic energy at ? How is the work done in going from to related to force shown in the graph? Using the work–kinetic energy theorem, what is the kinetic energy at ? What is the velocity at ? ANSWER: kg m/s x = 0m x = 2m x = 0 m x = 0 m x = 2 m x = 2 m x = 2 m Correct Part B What is its velocity at ? Express your answer to two significant figures and include the appropriate units. Hint 1. How to approach the problem What is the work–kinetic energy theorem? What is the kinetic energy at ? How is the work done in going from to related to force shown in the graph? Can the work be negative? Using the work–kinetic energy theorem, what is the kinetic energy at ? What is the velocity at ? ANSWER: Correct Work on a Sliding Block A block of weight sits on a frictionless inclined plane, which makes an angle with respect to the horizontal, as shown. A force of magnitude , applied parallel to the incline, pulls the block up the plane at constant speed. v = 6.2 ms x = 4m x = 0 m x = 0 m x = 4 m x = 4 m x = 4 m v = 4.6 ms w  F Part A The block moves a distance up the incline. The block does not stop after moving this distance but continues to move with constant speed. What is the total work done on the block by all forces? (Include only the work done after the block has started moving, not the work needed to start the block moving from rest.) Express your answer in terms of given quantities. Hint 1. What physical principle to use To find the total work done on the block, use the work-energy theorem: . Hint 2. Find the change in kinetic energy What is the change in the kinetic energy of the block, from the moment it starts moving until it has been pulled a distance ? Remember that the block is pulled at constant speed. Hint 1. Consider kinetic energy If the block's speed does not change, its kinetic energy cannot change. ANSWER: ANSWER: L Wtot Wtot = Kf − Ki L Kf − Ki = 0 Wtot = 0 Correct Part B What is , the work done on the block by the force of gravity as the block moves a distance up the incline? Express the work done by gravity in terms of the weight and any other quantities given in the problem introduction. Hint 1. Force diagram Hint 2. Force of gravity component What is the component of the force of gravity in the direction of the block's displacement (along the inclined plane)? Express your answer in terms of and . Hint 1. Relative direction of the force and the motion Remember that the force of gravity acts down the plane, whereas the block's displacement is directed up the plane. ANSWER: Wg L w w  ANSWER: Correct Part C What is , the work done on the block by the applied force as the block moves a distance up the incline? Express your answer in terms of and other given quantities. Hint 1. How to find the work done by a constant force Remember that the work done on an object by a particular force is the integral of the dot product of the force and the instantaneous displacement of the object, over the path followed by the object. In this case, since the force is constant and the path is a straight segment of length up the inclined plane, the dot product becomes simple multiplication. ANSWER: Correct Part D What is , the work done on the block by the normal force as the block moves a distance up the inclined plane? Express your answer in terms of given quantities. Hint 1. First step in computing the work Fg|| = −wsin() Wg = −wLsin() WF F L F L WF = FL Wnormal L The work done by the normal force is equal to the dot product of the force vector and the block's displacement vector. The normal force and the block's displacement vector are perpendicular. Therefore, what is their dot product? ANSWER: ANSWER: Correct Problem 11.20 A particle moving along the -axis has the potential energy , where is in . Part A What is the -component of the force on the particle at ? Express your answer to two significant figures and include the appropriate units. ANSWER: Correct Part B What is the -component of the force on the particle at ? Express your answer to two significant figures and include the appropriate units. N  L = 0 Wnormal = 0 y U = 3.2y3 J y m y y = 0 m Fy = 0 N y y = 1 m ANSWER: Correct Part C What is the -component of the force on the particle at ? Express your answer to two significant figures and include the appropriate units. ANSWER: Correct Problem 11.28 A cable with 25.0 of tension pulls straight up on a 1.08 block that is initially at rest. Part A What is the block's speed after being lifted 2.40 ? Solve this problem using work and energy. Express your answer with the appropriate units. ANSWER: Correct Fy = -9.6 N y y = 2 m Fy = -38 N N kg m vf = 8.00 ms Problem 11.29 Part A How much work does an elevator motor do to lift a 1500 elevator a height of 110 ? Express your answer with the appropriate units. ANSWER: Correct Part B How much power must the motor supply to do this in 50 at constant speed? Express your answer with the appropriate units. ANSWER: Correct Problem 11.32 How many energy is consumed by a 1.20 hair dryer used for 10.0 and a 11.0 night light left on for 16.0 ? Part A Hair dryer: Express your answer with the appropriate units. kg m Wext = 1.62×106 J s = 3.23×104 P W kW min W hr ANSWER: Correct Part B Night light: Express your answer with the appropriate units. ANSWER: Correct Problem 11.42 A 2500 elevator accelerates upward at 1.20 for 10.0 , starting from rest. Part A How much work does gravity do on the elevator? Express your answer with the appropriate units. ANSWER: Correct W = 7.20×105 J = 6.34×105 W J kg m/s2 m −2.45×105 J Part B How much work does the tension in the elevator cable do on the elevator? Express your answer with the appropriate units. ANSWER: Correct Part C Use the work-kinetic energy theorem to find the kinetic energy of the elevator as it reaches 10.0 . Express your answer with the appropriate units. ANSWER: Correct Part D What is the speed of the elevator as it reaches 10.0 ? Express your answer with the appropriate units. ANSWER: Correct 2.75×105 J m 3.00×104 J m 4.90 ms Problem 11.47 A horizontal spring with spring constant 130 is compressed 17 and used to launch a 2.4 box across a frictionless, horizontal surface. After the box travels some distance, the surface becomes rough. The coefficient of kinetic friction of the box on the surface is 0.15. Part A Use work and energy to find how far the box slides across the rough surface before stopping. Express your answer to two significant figures and include the appropriate units. ANSWER: Correct Problem 11.49 Truck brakes can fail if they get too hot. In some mountainous areas, ramps of loose gravel are constructed to stop runaway trucks that have lost their brakes. The combination of a slight upward slope and a large coefficient of rolling friction as the truck tires sink into the gravel brings the truck safely to a halt. Suppose a gravel ramp slopes upward at 6.0 and the coefficient of rolling friction is 0.45. Part A Use work and energy to find the length of a ramp that will stop a 15,000 truck that enters the ramp at 30 . Express your answer to two significant figures and include the appropriate units. ANSWER: Correct N/m cm kg l = 53 cm kg m/s l = 83 m Problem 11.51 Use work and energy to find an expression for the speed of the block in the following figure just before it hits the floor. Part A Find an expression for the speed of the block if the coefficient of kinetic friction for the block on the table is . Express your answer in terms of the variables , , , , and free fall acceleration . ANSWER: Part B Find an expression for the speed of the block if the table is frictionless. Express your answer in terms of the variables , , , and free fall acceleration . ANSWER: μk M m h μk g v = M m h g Problem 11.57 The spring shown in the figure is compressed 60 and used to launch a 100 physics student. The track is frictionless until it starts up the incline. The student's coefficient of kinetic friction on the incline is 0.12 . Part A What is the student's speed just after losing contact with the spring? Express your answer to two significant figures and include the appropriate units. ANSWER: Correct Part B How far up the incline does the student go? Express your answer to two significant figures and include the appropriate units. ANSWER: v = cm kg 30 v = 17 ms Correct Score Summary: Your score on this assignment is 93.6%. You received 112.37 out of a possible total of 120 points. !s = 41 m

Assignment 9 Due: 11:59pm on Friday, April 11, 2014 You will receive no credit for items you complete after the assignment is due. Grading Policy Problem 11.2 Part A Evaluate the dot product if and . Express your answer using two significant figures. ANSWER: Correct Part B Evaluate the dot product if and . Express your answer using two significant figures. ANSWER: Correct Problem 11.4  A B = 5 − 6 A i ^ j ^ = −9 − 5 B i ^ j ^ A  B  = -15  A B = −5 + 9 A i ^ j ^ = 5 + 6 B i ^ j ^ A  B  = 29 Part A What is the angle between vectors and if and ? Express your answer as an integer and include the appropriate units. ANSWER: Correct Part B What is the angle between vectors and if and ? Express your answer as an integer and include the appropriate units. ANSWER: Correct ± All Work and No Play Learning Goal: To be able to calculate work done by a constant force directed at different angles relative to displacement If an object undergoes displacement while being acted upon by a force (or several forces), it is said that work is being done on the object. If the object is moving in a straight line and the displacement and the force are known, the work done by the force can be calculated as , where is the work done by force on the object that undergoes displacement directed at angle relative to .  A B A = 2 + 5 ı ^  ^ B = −2 − 4 ı ^  ^  = 175  A B A = −6 + 2 ı ^  ^ B = − − 3 ı ^  ^  = 90 W =  = cos  F  s  F   s  W F  s  F  Note that depending on the value of , the work done can be positive, negative, or zero. In this problem, you will practice calculating work done on an object moving in a straight line. The first series of questions is related to the accompanying figure. Part A What can be said about the sign of the work done by the force ? ANSWER: Correct When , the cosine of is zero, and therefore the work done is zero. Part B cos  F  1 It is positive. It is negative. It is zero. There is not enough information to answer the question.  = 90  What can be said about the work done by force ? ANSWER: Correct When , is positive, and so the work done is positive. Part C The work done by force is ANSWER: Correct When , is negative, and so the work done is negative. Part D The work done by force is ANSWER: F  2 It is positive. It is negative. It is zero. 0 <  < 90 cos  F  3 positive negative zero 90 <  < 180 cos  F  4 Correct Part E The work done by force is ANSWER: Correct positive negative zero F  5 positive negative zero Part F The work done by force is ANSWER: Correct Part G The work done by force is ANSWER: Correct In the next series of questions, you will use the formula to calculate the work done by various forces on an object that moves 160 meters to the right. F  6 positive negative zero F  7 positive negative zero W =  = cos  F  s  F   s  Part H Find the work done by the 18-newton force. Use two significant figures in your answer. Express your answer in joules. ANSWER: Correct Part I Find the work done by the 30-newton force. Use two significant figures in your answer. Express your answer in joules. ANSWER: Correct Part J Find the work done by the 12-newton force. Use two significant figures in your answer. Express your answer in joules. W W = 2900 J W W = 4200 J W ANSWER: Correct Part K Find the work done by the 15-newton force. Use two significant figures in your answer. Express your answer in joules. ANSWER: Correct Introduction to Potential Energy Learning Goal: Understand that conservative forces can be removed from the work integral by incorporating them into a new form of energy called potential energy that must be added to the kinetic energy to get the total mechanical energy. The first part of this problem contains short-answer questions that review the work-energy theorem. In the second part we introduce the concept of potential energy. But for now, please answer in terms of the work-energy theorem. Work-Energy Theorem The work-energy theorem states , where is the work done by all forces that act on the object, and and are the initial and final kinetic energies, respectively. Part A The work-energy theorem states that a force acting on a particle as it moves over a ______ changes the ______ energy of the particle if the force has a component parallel to the motion. W = -1900 J W W = -1800 J Kf = Ki + Wall Wall Ki Kf Choose the best answer to fill in the blanks above: ANSWER: Correct It is important that the force have a component acting in the direction of motion. For example, if a ball is attached to a string and whirled in uniform circular motion, the string does apply a force to the ball, but since the string's force is always perpendicular to the motion it does no work and cannot change the kinetic energy of the ball. Part B To calculate the change in energy, you must know the force as a function of _______. The work done by the force causes the energy change. Choose the best answer to fill in the blank above: ANSWER: Correct Part C To illustrate the work-energy concept, consider the case of a stone falling from to under the influence of gravity. Using the work-energy concept, we say that work is done by the gravitational _____, resulting in an increase of the ______ energy of the stone. Choose the best answer to fill in the blanks above: distance / potential distance / kinetic vertical displacement / potential none of the above acceleration work distance potential energy xi xf ANSWER: Correct Potential Energy You should read about potential energy in your text before answering the following questions. Potential energy is a concept that builds on the work-energy theorem, enlarging the concept of energy in the most physically useful way. The key aspect that allows for potential energy is the existence of conservative forces, forces for which the work done on an object does not depend on the path of the object, only the initial and final positions of the object. The gravitational force is conservative; the frictional force is not. The change in potential energy is the negative of the work done by conservative forces. Hence considering the initial and final potential energies is equivalent to calculating the work done by the conservative forces. When potential energy is used, it replaces the work done by the associated conservative force. Then only the work due to nonconservative forces needs to be calculated. In summary, when using the concept of potential energy, only nonconservative forces contribute to the work, which now changes the total energy: , where and are the final and initial potential energies, and is the work due only to nonconservative forces. Now, we will revisit the falling stone example using the concept of potential energy. Part D Rather than ascribing the increased kinetic energy of the stone to the work of gravity, we now (when using potential energy rather than work-energy) say that the increased kinetic energy comes from the ______ of the _______ energy. Choose the best answer to fill in the blanks above: ANSWER: force / kinetic potential energy / potential force / potential potential energy / kinetic Kf + Uf = Ef = Wnc + Ei = Wnc + Ki + Ui Uf Ui Wnc Correct Part E This process happens in such a way that total mechanical energy, equal to the ______ of the kinetic and potential energies, is _______. Choose the best answer to fill in the blanks above: ANSWER: Correct Problem 11.7 Part A How much work is done by the force 2.2 6.6 on a particle that moves through displacement 3.9 Express your answer to two significant figures and include the appropriate units. ANSWER: work / potential force / kinetic change / potential sum / conserved sum / zero sum / not conserved difference / conserved F  = (− + i ^ ) N j ^ ! = r m i ^ Correct Part B How much work is done by the force 2.2 6.6 on a particle that moves through displacement 3.9 Express your answer to two significant figures and include the appropriate units. ANSWER: Correct Problem 11.10 A 1.8 book is lying on a 0.80- -high table. You pick it up and place it on a bookshelf 2.27 above the floor. Part A How much work does gravity do on the book? Express your answer to two significant figures and include the appropriate units. ANSWER: Correct Part B W = -8.6 J F  = (− + i ^ ) N j ^ ! = r m? j ^ W = 26 J kg m m Wg = -26 J How much work does your hand do on the book? Express your answer to two significant figures and include the appropriate units. ANSWER: Correct Problem 11.12 The three ropes shown in the bird's-eye view of the figure are used to drag a crate 3.3 across the floor. Part A How much work is done by each of the three forces? Express your answers using two significant figures. Enter your answers numerically separated by commas. ANSWER: WH = 26 J m W1 , W2 , W3 = 1.9,1.2,-2.1 kJ Correct Enhanced EOC: Problem 11.16 A 1.2 particle moving along the x-axis experiences the force shown in the figure. The particle's velocity is 4.6 at . You may want to review ( pages 286 - 287) . For help with math skills, you may want to review: The Definite Integral Part A What is its velocity at ? Express your answer to two significant figures and include the appropriate units. Hint 1. How to approach the problem What is the work–kinetic energy theorem? What is the kinetic energy at ? How is the work done in going from to related to force shown in the graph? Using the work–kinetic energy theorem, what is the kinetic energy at ? What is the velocity at ? ANSWER: kg m/s x = 0m x = 2m x = 0 m x = 0 m x = 2 m x = 2 m x = 2 m Correct Part B What is its velocity at ? Express your answer to two significant figures and include the appropriate units. Hint 1. How to approach the problem What is the work–kinetic energy theorem? What is the kinetic energy at ? How is the work done in going from to related to force shown in the graph? Can the work be negative? Using the work–kinetic energy theorem, what is the kinetic energy at ? What is the velocity at ? ANSWER: Correct Work on a Sliding Block A block of weight sits on a frictionless inclined plane, which makes an angle with respect to the horizontal, as shown. A force of magnitude , applied parallel to the incline, pulls the block up the plane at constant speed. v = 6.2 ms x = 4m x = 0 m x = 0 m x = 4 m x = 4 m x = 4 m v = 4.6 ms w  F Part A The block moves a distance up the incline. The block does not stop after moving this distance but continues to move with constant speed. What is the total work done on the block by all forces? (Include only the work done after the block has started moving, not the work needed to start the block moving from rest.) Express your answer in terms of given quantities. Hint 1. What physical principle to use To find the total work done on the block, use the work-energy theorem: . Hint 2. Find the change in kinetic energy What is the change in the kinetic energy of the block, from the moment it starts moving until it has been pulled a distance ? Remember that the block is pulled at constant speed. Hint 1. Consider kinetic energy If the block's speed does not change, its kinetic energy cannot change. ANSWER: ANSWER: L Wtot Wtot = Kf − Ki L Kf − Ki = 0 Wtot = 0 Correct Part B What is , the work done on the block by the force of gravity as the block moves a distance up the incline? Express the work done by gravity in terms of the weight and any other quantities given in the problem introduction. Hint 1. Force diagram Hint 2. Force of gravity component What is the component of the force of gravity in the direction of the block's displacement (along the inclined plane)? Express your answer in terms of and . Hint 1. Relative direction of the force and the motion Remember that the force of gravity acts down the plane, whereas the block's displacement is directed up the plane. ANSWER: Wg L w w  ANSWER: Correct Part C What is , the work done on the block by the applied force as the block moves a distance up the incline? Express your answer in terms of and other given quantities. Hint 1. How to find the work done by a constant force Remember that the work done on an object by a particular force is the integral of the dot product of the force and the instantaneous displacement of the object, over the path followed by the object. In this case, since the force is constant and the path is a straight segment of length up the inclined plane, the dot product becomes simple multiplication. ANSWER: Correct Part D What is , the work done on the block by the normal force as the block moves a distance up the inclined plane? Express your answer in terms of given quantities. Hint 1. First step in computing the work Fg|| = −wsin() Wg = −wLsin() WF F L F L WF = FL Wnormal L The work done by the normal force is equal to the dot product of the force vector and the block's displacement vector. The normal force and the block's displacement vector are perpendicular. Therefore, what is their dot product? ANSWER: ANSWER: Correct Problem 11.20 A particle moving along the -axis has the potential energy , where is in . Part A What is the -component of the force on the particle at ? Express your answer to two significant figures and include the appropriate units. ANSWER: Correct Part B What is the -component of the force on the particle at ? Express your answer to two significant figures and include the appropriate units. N  L = 0 Wnormal = 0 y U = 3.2y3 J y m y y = 0 m Fy = 0 N y y = 1 m ANSWER: Correct Part C What is the -component of the force on the particle at ? Express your answer to two significant figures and include the appropriate units. ANSWER: Correct Problem 11.28 A cable with 25.0 of tension pulls straight up on a 1.08 block that is initially at rest. Part A What is the block's speed after being lifted 2.40 ? Solve this problem using work and energy. Express your answer with the appropriate units. ANSWER: Correct Fy = -9.6 N y y = 2 m Fy = -38 N N kg m vf = 8.00 ms Problem 11.29 Part A How much work does an elevator motor do to lift a 1500 elevator a height of 110 ? Express your answer with the appropriate units. ANSWER: Correct Part B How much power must the motor supply to do this in 50 at constant speed? Express your answer with the appropriate units. ANSWER: Correct Problem 11.32 How many energy is consumed by a 1.20 hair dryer used for 10.0 and a 11.0 night light left on for 16.0 ? Part A Hair dryer: Express your answer with the appropriate units. kg m Wext = 1.62×106 J s = 3.23×104 P W kW min W hr ANSWER: Correct Part B Night light: Express your answer with the appropriate units. ANSWER: Correct Problem 11.42 A 2500 elevator accelerates upward at 1.20 for 10.0 , starting from rest. Part A How much work does gravity do on the elevator? Express your answer with the appropriate units. ANSWER: Correct W = 7.20×105 J = 6.34×105 W J kg m/s2 m −2.45×105 J Part B How much work does the tension in the elevator cable do on the elevator? Express your answer with the appropriate units. ANSWER: Correct Part C Use the work-kinetic energy theorem to find the kinetic energy of the elevator as it reaches 10.0 . Express your answer with the appropriate units. ANSWER: Correct Part D What is the speed of the elevator as it reaches 10.0 ? Express your answer with the appropriate units. ANSWER: Correct 2.75×105 J m 3.00×104 J m 4.90 ms Problem 11.47 A horizontal spring with spring constant 130 is compressed 17 and used to launch a 2.4 box across a frictionless, horizontal surface. After the box travels some distance, the surface becomes rough. The coefficient of kinetic friction of the box on the surface is 0.15. Part A Use work and energy to find how far the box slides across the rough surface before stopping. Express your answer to two significant figures and include the appropriate units. ANSWER: Correct Problem 11.49 Truck brakes can fail if they get too hot. In some mountainous areas, ramps of loose gravel are constructed to stop runaway trucks that have lost their brakes. The combination of a slight upward slope and a large coefficient of rolling friction as the truck tires sink into the gravel brings the truck safely to a halt. Suppose a gravel ramp slopes upward at 6.0 and the coefficient of rolling friction is 0.45. Part A Use work and energy to find the length of a ramp that will stop a 15,000 truck that enters the ramp at 30 . Express your answer to two significant figures and include the appropriate units. ANSWER: Correct N/m cm kg l = 53 cm kg m/s l = 83 m Problem 11.51 Use work and energy to find an expression for the speed of the block in the following figure just before it hits the floor. Part A Find an expression for the speed of the block if the coefficient of kinetic friction for the block on the table is . Express your answer in terms of the variables , , , , and free fall acceleration . ANSWER: Part B Find an expression for the speed of the block if the table is frictionless. Express your answer in terms of the variables , , , and free fall acceleration . ANSWER: μk M m h μk g v = M m h g Problem 11.57 The spring shown in the figure is compressed 60 and used to launch a 100 physics student. The track is frictionless until it starts up the incline. The student's coefficient of kinetic friction on the incline is 0.12 . Part A What is the student's speed just after losing contact with the spring? Express your answer to two significant figures and include the appropriate units. ANSWER: Correct Part B How far up the incline does the student go? Express your answer to two significant figures and include the appropriate units. ANSWER: v = cm kg 30 v = 17 ms Correct Score Summary: Your score on this assignment is 93.6%. You received 112.37 out of a possible total of 120 points. !s = 41 m

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Chapter 07 Homework Due: 11:59pm on Friday, May 23, 2014 You will receive no credit for items you complete after the assignment is due. Grading Policy BioFlix Quiz: The Carbon Cycle Watch the animation at left before answering the questions below. Part A An organism gets carbon by using carbon dioxide in the atmosphere to make sugar molecules. This organism is a Hint 1. Review the animation or your Study Sheet for The Carbon Cycle. ANSWER: Correct During photosynthesis, producers use carbon dioxide to make sugar molecules. Part B Which organisms play a role in returning carbon to the atmosphere? Hint 1. Review the animation or your Study Sheet for The Carbon Cycle. ANSWER: higher-level consumer. producer. primary consumer. decomposer. None of the above Consumers and decomposers, but not producers. Producers only. Decomposers only. Consumers only. Producers, consumers, and decomposers. Chapter 07 Homework http://session.masteringenvironmentalscience.com/myct/assignmentPrintV… 1 of 7 5/21/2014 8:02 PM Correct Producers, consumers, and decomposers all return carbon dioxide to the atmosphere during cellular respiration. Part C Every carbon atom in the organic molecules that make up your body MUST recently have been part of Hint 1. Review the animation or your Study Sheet for The Carbon Cycle. ANSWER: Correct You are a consumer, and all your carbon comes ultimately from plants and other producers. Part D Imagine following a single carbon atom through the carbon cycle. Which of the following is a possible path for the carbon atom to take? Hint 1. Review the animation or your Study Sheet for The Carbon Cycle. ANSWER: Correct Carbon moves from the atmosphere into a producer (such as a plant), up the food chain, and then back to the atmosphere during cellular respiration. Part E Which process or processes return carbon to the atmosphere? Hint 1. Review the animation. ANSWER: Correct Cellular respiration results in the release of carbon dioxide to the atmosphere. a higher-level consumer. a primary consumer. a decomposer. a producer. a sugar molecule made in one of your chloroplasts. The atmosphere; a plant; a higher-level consumer; then back to the atmosphere. The atmosphere; a plant; an herbivore; another plant; then back to the atmosphere. The atmosphere, a plant, a herbivore, a decomposer, then back to the atmosphere The atmosphere; a decomposer; a higher-level consumer; then back to the atmosphere. The atmosphere; a decomposer; then back to the atmosphere. Cellular respiration only Photosynthesis only Cellular respiration and photosynthesis Breakdown of large organic molecules into smaller organic molecules Cellular respiration and the breakdown of large organic molecules into smaller organic molecules Chapter 07 Homework http://session.masteringenvironmentalscience.com/myct/assignmentPrintV… 2 of 7 5/21/2014 8:02 PM Activity: The Nitrogen Cycle Click here to complete this activity. Then answer the questions. Part A Nitrifying bacteria convert _____ to _____. ANSWER: Correct Nitrifying bacteria convert ammonium to nitrites. Part B _____ removes nitrogen from the atmosphere. ANSWER: Correct Nitrogen fixation is the conversion of nitrogen gas to a form that can be used by plants (and other organisms). Part C Assimilation is indicated by the letter(s) _____. nitrogen gas … ammonium nitrogen gas … nitrates ammonium … nitrites nitrates … nitrogen gas ammonium … nitrogen gas Denitrification Nitrification Mineralization Nitrogen fixation Assimilation Chapter 07 Homework http://session.masteringenvironmentalscience.com/myct/assignmentPrintV… 3 of 7 5/21/2014 8:02 PM ANSWER: Correct Assimilation is the uptake of nutrients into an organism. Part D Nitrogen-fixing bacteria is(are) indicated by the letter(s) _____. ANSWER: Correct Both of these pointers are indicating nitrogen-fixing bacteria. Nitrogen fixation is the conversion of nitrogen to a form that plants can use. Part E Nitrification is indicated by the letter(s) _____. ANSWER: C B A D and E C and D B and C A and B D and E C and D A Chapter 07 Homework http://session.masteringenvironmentalscience.com/myct/assignmentPrintV… 4 of 7 5/21/2014 8:02 PM Correct Nitrification is the conversion of organic nitrogen-containing compounds to nitrites and nitrates. Part F Denitrifying bacteria convert _____ to _____. ANSWER: Correct Denitrifying bacteria convert nitrates to nitrogen gas. Part G Which one of these is a nitrate? ANSWER: Correct NO3 – is a nitrate. Part H Which one of these is a nitrite? ANSWER: Correct This is a nitrite. GeoScience: Earth’s Water and the Hydrologic Cycle A B B and C D and E B and E nitrogen gas … nitrites nitrogen gas … ammonium nitrates … nitrogen gas ammonium … nitrogen gas nitrogen gas … nitrates NO2 – NH4 – NH2 SH NO3 – PO4 – NH2 NH4 – NO2 – NO3 – Chapter 07 Homework http://session.masteringenvironmentalscience.com/myct/assignmentPrintV… 5 of 7 5/21/2014 8:02 PM When you have finished, answer the questions. Part A The largest percentage of fresh water today is located in: ANSWER: Correct Ice sheets and glaciers are the greatest single repository of fresh water: they contain 77.3% of all Earth’s fresh water and 99.357% of all Earth’s surface fresh water. Part B Earth’s oceans hold: ANSWER: Correct The oceans contain 97.22% of all water, comprising about 1.321 billion cubic kilometers of salt water. This leaves only 2.78% of all of Earth’s water as fresh water (non-oceanic). Part C Which of the following is true of the hydrologic cycle? ANSWER: Correct About 20% of the moisture evaporated from the ocean combines with 2% of land-derived moisture to produce 22% of all precipitation that falls over land. Clearly, the bulk of continental precipitation comes from the oceanic portion of the cycle. Concept Review: Eutrophication Can you sequence the steps in the eutrophication process that occurs in a body of water? Part A Drag each statement to the appropriate location in the flowchart of the eutrophication process. ANSWER: soil. ice sheets and glaciers. the rivers and lakes of the world. groundwater resources. about the same amount of water as all groundwater sources combined. most of the fresh water on Earth. the bulk of all of the water found on Earth. about the same amount of water as all Earth’s rivers and lakes combined. Atmospheric water and surface water do not mix. Most evaporation on Earth occurs over the continents. The bulk of the precipitation occurs over land. Most of the water that falls on the continents is derived from the oceans. Chapter 07 Homework http://session.masteringenvironmentalscience.com/myct/assignmentPrintV… 6 of 7 5/21/2014 8:02 PM Concept Review: Biogeochemical Cycles Can you sort the items by which biogeochemical cycle they apply to? Part A Drag each description to the appropriate bin. ANSWER: Score Summary: Your score on this assignment is 62.3%. You received 12.45 out of a possible total of 20 points. Chapter 07 Homework http://session.masteringenvironmentalscience.com/myct/assignmentPrintV… 7 of 7 5/21/2014 8:02 PM

Chapter 07 Homework Due: 11:59pm on Friday, May 23, 2014 You will receive no credit for items you complete after the assignment is due. Grading Policy BioFlix Quiz: The Carbon Cycle Watch the animation at left before answering the questions below. Part A An organism gets carbon by using carbon dioxide in the atmosphere to make sugar molecules. This organism is a Hint 1. Review the animation or your Study Sheet for The Carbon Cycle. ANSWER: Correct During photosynthesis, producers use carbon dioxide to make sugar molecules. Part B Which organisms play a role in returning carbon to the atmosphere? Hint 1. Review the animation or your Study Sheet for The Carbon Cycle. ANSWER: higher-level consumer. producer. primary consumer. decomposer. None of the above Consumers and decomposers, but not producers. Producers only. Decomposers only. Consumers only. Producers, consumers, and decomposers. Chapter 07 Homework http://session.masteringenvironmentalscience.com/myct/assignmentPrintV… 1 of 7 5/21/2014 8:02 PM Correct Producers, consumers, and decomposers all return carbon dioxide to the atmosphere during cellular respiration. Part C Every carbon atom in the organic molecules that make up your body MUST recently have been part of Hint 1. Review the animation or your Study Sheet for The Carbon Cycle. ANSWER: Correct You are a consumer, and all your carbon comes ultimately from plants and other producers. Part D Imagine following a single carbon atom through the carbon cycle. Which of the following is a possible path for the carbon atom to take? Hint 1. Review the animation or your Study Sheet for The Carbon Cycle. ANSWER: Correct Carbon moves from the atmosphere into a producer (such as a plant), up the food chain, and then back to the atmosphere during cellular respiration. Part E Which process or processes return carbon to the atmosphere? Hint 1. Review the animation. ANSWER: Correct Cellular respiration results in the release of carbon dioxide to the atmosphere. a higher-level consumer. a primary consumer. a decomposer. a producer. a sugar molecule made in one of your chloroplasts. The atmosphere; a plant; a higher-level consumer; then back to the atmosphere. The atmosphere; a plant; an herbivore; another plant; then back to the atmosphere. The atmosphere, a plant, a herbivore, a decomposer, then back to the atmosphere The atmosphere; a decomposer; a higher-level consumer; then back to the atmosphere. The atmosphere; a decomposer; then back to the atmosphere. Cellular respiration only Photosynthesis only Cellular respiration and photosynthesis Breakdown of large organic molecules into smaller organic molecules Cellular respiration and the breakdown of large organic molecules into smaller organic molecules Chapter 07 Homework http://session.masteringenvironmentalscience.com/myct/assignmentPrintV… 2 of 7 5/21/2014 8:02 PM Activity: The Nitrogen Cycle Click here to complete this activity. Then answer the questions. Part A Nitrifying bacteria convert _____ to _____. ANSWER: Correct Nitrifying bacteria convert ammonium to nitrites. Part B _____ removes nitrogen from the atmosphere. ANSWER: Correct Nitrogen fixation is the conversion of nitrogen gas to a form that can be used by plants (and other organisms). Part C Assimilation is indicated by the letter(s) _____. nitrogen gas … ammonium nitrogen gas … nitrates ammonium … nitrites nitrates … nitrogen gas ammonium … nitrogen gas Denitrification Nitrification Mineralization Nitrogen fixation Assimilation Chapter 07 Homework http://session.masteringenvironmentalscience.com/myct/assignmentPrintV… 3 of 7 5/21/2014 8:02 PM ANSWER: Correct Assimilation is the uptake of nutrients into an organism. Part D Nitrogen-fixing bacteria is(are) indicated by the letter(s) _____. ANSWER: Correct Both of these pointers are indicating nitrogen-fixing bacteria. Nitrogen fixation is the conversion of nitrogen to a form that plants can use. Part E Nitrification is indicated by the letter(s) _____. ANSWER: C B A D and E C and D B and C A and B D and E C and D A Chapter 07 Homework http://session.masteringenvironmentalscience.com/myct/assignmentPrintV… 4 of 7 5/21/2014 8:02 PM Correct Nitrification is the conversion of organic nitrogen-containing compounds to nitrites and nitrates. Part F Denitrifying bacteria convert _____ to _____. ANSWER: Correct Denitrifying bacteria convert nitrates to nitrogen gas. Part G Which one of these is a nitrate? ANSWER: Correct NO3 – is a nitrate. Part H Which one of these is a nitrite? ANSWER: Correct This is a nitrite. GeoScience: Earth’s Water and the Hydrologic Cycle A B B and C D and E B and E nitrogen gas … nitrites nitrogen gas … ammonium nitrates … nitrogen gas ammonium … nitrogen gas nitrogen gas … nitrates NO2 – NH4 – NH2 SH NO3 – PO4 – NH2 NH4 – NO2 – NO3 – Chapter 07 Homework http://session.masteringenvironmentalscience.com/myct/assignmentPrintV… 5 of 7 5/21/2014 8:02 PM When you have finished, answer the questions. Part A The largest percentage of fresh water today is located in: ANSWER: Correct Ice sheets and glaciers are the greatest single repository of fresh water: they contain 77.3% of all Earth’s fresh water and 99.357% of all Earth’s surface fresh water. Part B Earth’s oceans hold: ANSWER: Correct The oceans contain 97.22% of all water, comprising about 1.321 billion cubic kilometers of salt water. This leaves only 2.78% of all of Earth’s water as fresh water (non-oceanic). Part C Which of the following is true of the hydrologic cycle? ANSWER: Correct About 20% of the moisture evaporated from the ocean combines with 2% of land-derived moisture to produce 22% of all precipitation that falls over land. Clearly, the bulk of continental precipitation comes from the oceanic portion of the cycle. Concept Review: Eutrophication Can you sequence the steps in the eutrophication process that occurs in a body of water? Part A Drag each statement to the appropriate location in the flowchart of the eutrophication process. ANSWER: soil. ice sheets and glaciers. the rivers and lakes of the world. groundwater resources. about the same amount of water as all groundwater sources combined. most of the fresh water on Earth. the bulk of all of the water found on Earth. about the same amount of water as all Earth’s rivers and lakes combined. Atmospheric water and surface water do not mix. Most evaporation on Earth occurs over the continents. The bulk of the precipitation occurs over land. Most of the water that falls on the continents is derived from the oceans. Chapter 07 Homework http://session.masteringenvironmentalscience.com/myct/assignmentPrintV… 6 of 7 5/21/2014 8:02 PM Concept Review: Biogeochemical Cycles Can you sort the items by which biogeochemical cycle they apply to? Part A Drag each description to the appropriate bin. ANSWER: Score Summary: Your score on this assignment is 62.3%. You received 12.45 out of a possible total of 20 points. Chapter 07 Homework http://session.masteringenvironmentalscience.com/myct/assignmentPrintV… 7 of 7 5/21/2014 8:02 PM

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PlotCycloidArc(8.5) Math98 HW4 The cylcoid is the plane curve traced out by a point on a circle as the circle rolls without slipping on a straight line.1 In this exercise we will use MATLAB to create an animation of a circle rolling on a straight line, while a point on the circle traces the cycloid. a. Implement a MATLAB function of the form function PlotCycloidArc(ArcLength). This function takes in a positive number ArcLength and displays a snapshot of the cirle rolling (without slipping) on the x-axis while a point on the cirlce traces the cycloid. The circle is initially centered at (0,1) and has radius 1, and the initial tracing point is taken to be (0, 0). An example output is shown in the above ?gure. As in the ?gure, plot the cycloid arc black, the circle blue, and use a red dot for the tracing point. Hint: If the circle has rolled for a length of arc t = 0, the coordinates of the tracing point are (t-sin t, 1-cos t). b. Implement a MATLAB function of the form function CycloidMovie(NumHumps,NumIntervals). This function will output an animation of the circle rolling along a line while a point on the circle traces the cycloid. This function inputs two natural numbers NumHumps and NumIntervals representing the number of periods (or humps) of the cycloid and the number or frames per hump that will be used to make the animation, respectively. Use the getframe command to save frames outputted from PlotCycloidArc and the movie command to play them back together as a movie. Use the axis command to view the frames on the rectan- gle [0, 2pNumHumps] × [0, 5/2]. Also label the ticks 0, 2p, . . . , 2pNumHumps on the x axis with the strings 1See Wikipedia for more on the cycloid. 0, 2p, . . . , 2pNumHumps and do the same for 1, 2 on the y axis (see the ?gure above). Label the movie ’Cycloid Animation’. Submit MATLAB code for both parts a and b and a printout the ?gures obtained by the commands PlotCycloidArc(8.5), PlotCycloidArc(12), and CycloidMovie(3,10)

PlotCycloidArc(8.5) Math98 HW4 The cylcoid is the plane curve traced out by a point on a circle as the circle rolls without slipping on a straight line.1 In this exercise we will use MATLAB to create an animation of a circle rolling on a straight line, while a point on the circle traces the cycloid. a. Implement a MATLAB function of the form function PlotCycloidArc(ArcLength). This function takes in a positive number ArcLength and displays a snapshot of the cirle rolling (without slipping) on the x-axis while a point on the cirlce traces the cycloid. The circle is initially centered at (0,1) and has radius 1, and the initial tracing point is taken to be (0, 0). An example output is shown in the above ?gure. As in the ?gure, plot the cycloid arc black, the circle blue, and use a red dot for the tracing point. Hint: If the circle has rolled for a length of arc t = 0, the coordinates of the tracing point are (t-sin t, 1-cos t). b. Implement a MATLAB function of the form function CycloidMovie(NumHumps,NumIntervals). This function will output an animation of the circle rolling along a line while a point on the circle traces the cycloid. This function inputs two natural numbers NumHumps and NumIntervals representing the number of periods (or humps) of the cycloid and the number or frames per hump that will be used to make the animation, respectively. Use the getframe command to save frames outputted from PlotCycloidArc and the movie command to play them back together as a movie. Use the axis command to view the frames on the rectan- gle [0, 2pNumHumps] × [0, 5/2]. Also label the ticks 0, 2p, . . . , 2pNumHumps on the x axis with the strings 1See Wikipedia for more on the cycloid. 0, 2p, . . . , 2pNumHumps and do the same for 1, 2 on the y axis (see the ?gure above). Label the movie ’Cycloid Animation’. Submit MATLAB code for both parts a and b and a printout the ?gures obtained by the commands PlotCycloidArc(8.5), PlotCycloidArc(12), and CycloidMovie(3,10)

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HIST 303 Rebels and Renegades Comparative Paper – Conroy & Drakulic In a well-written analysis of about 3 pages, compare and contrast Conroy’s Belfast Diary or Drakulic’s How We Survived Communism and Even Laughed in response to the following question: It can be argued that in the midst of deprivation and hardship, people still exercise considerable agency—or the power to act within one’s particular socio-political context. In fact, living the ordinary can be considered an act of rebellion against an imposing power. That is, people use and experience their lives as resistance to oppression or war. This is sometimes referred to as the “politics of everyday life”. How does this concept of agency play out in these works? In your response, do not simply list examples, but analyze the examples by the authors in relation to the larger themes of the course. A successful assignment will (this is a checklist, so heed it well!!!): * have a solid introduction with an arguable thesis; * be well organized with coherent paragraphs relevant to the thesis; * have a concluding paragraph that concisely and accurately summarizes the paper; * adequately analyze the histories and their connections to each other; * use relevant evidence to substantiate claims; * be analytic, not descriptive; * properly cite and punctuate quotations and evidence; * be paginated; * have an interesting title relevant to the argument (e.g. “Comparative Paper” is unacceptable); * be well written, well edited and well documented. Author Specific Points that discuss everyday activities as resistance Relate to your other Reading (Williams, Hall, Hebdige, etc.) Conroy Drakulic Working Thesis: _____________________________________________________________________ ____________________________________________________________________________________ ****FORMATTING DIRECTIONS: This paper should be 3 – 4 pages (no more), typed, doublespaced, with one-inch margins and 12-point font. This assignment is worth 25% of your grade in this course. You must head your paper with your name and date and include your name and pages (x of x) in a header or footer of each page. At the end of your paper, you must skip four lines then sign with the following: “I attest that the work contained in this document is entirely my own and it numbers x pages.” *****

HIST 303 Rebels and Renegades Comparative Paper – Conroy & Drakulic In a well-written analysis of about 3 pages, compare and contrast Conroy’s Belfast Diary or Drakulic’s How We Survived Communism and Even Laughed in response to the following question: It can be argued that in the midst of deprivation and hardship, people still exercise considerable agency—or the power to act within one’s particular socio-political context. In fact, living the ordinary can be considered an act of rebellion against an imposing power. That is, people use and experience their lives as resistance to oppression or war. This is sometimes referred to as the “politics of everyday life”. How does this concept of agency play out in these works? In your response, do not simply list examples, but analyze the examples by the authors in relation to the larger themes of the course. A successful assignment will (this is a checklist, so heed it well!!!): * have a solid introduction with an arguable thesis; * be well organized with coherent paragraphs relevant to the thesis; * have a concluding paragraph that concisely and accurately summarizes the paper; * adequately analyze the histories and their connections to each other; * use relevant evidence to substantiate claims; * be analytic, not descriptive; * properly cite and punctuate quotations and evidence; * be paginated; * have an interesting title relevant to the argument (e.g. “Comparative Paper” is unacceptable); * be well written, well edited and well documented. Author Specific Points that discuss everyday activities as resistance Relate to your other Reading (Williams, Hall, Hebdige, etc.) Conroy Drakulic Working Thesis: _____________________________________________________________________ ____________________________________________________________________________________ ****FORMATTING DIRECTIONS: This paper should be 3 – 4 pages (no more), typed, doublespaced, with one-inch margins and 12-point font. This assignment is worth 25% of your grade in this course. You must head your paper with your name and date and include your name and pages (x of x) in a header or footer of each page. At the end of your paper, you must skip four lines then sign with the following: “I attest that the work contained in this document is entirely my own and it numbers x pages.” *****

Relative analysis of Conroy & Drakulic The Belfast Diary: War … Read More...
HST 102: Paper 7 Formal essay, due in class on the day of the debate No late papers will be accepted. Answer the following inquiry in a typed (and stapled) 2 page essay in the five-paragraph format. Present and describe three of your arguments that you will use to defend your position concerning eugenics. Each argument must be unique (don’t describe the same argument twice from a different angle). Each argument must include at least one quotation from the texts to support your position (a minimum of 3 total). You may discuss your positions and arguments with other people on your side (but not your opponents); however, each student must write their own essay in their own words. Do not copy sentences or paragraphs from another student’s paper, this is plagiarism and will result in a failing grade for the assignment. HST 102: Debate 4 Eugenics For or Against? Basics of the debate: The term ‘Eugenics’ was derived from two Greek words and literally means ‘good genes’. Eugenics is the social philosophy or practice of engineering society based on genes, or promoting the reproduction of good genes while reducing (or prohibiting) the reproduction of bad genes. Your group will argue either for or against the adoption of eugenic policies in your society. Key Terms: Eugenics – The study of or belief in the possibility of improving the qualities of the human species or a human population, especially by such means as discouraging reproduction by persons having genetic defects or presumed to have inheritable undesirable traits (negative eugenics) or encouraging reproduction by persons presumed to have inheritable desirable traits (positive eugenics). Darwinism – The Darwinian theory that species originate by descent, with variation, from parent forms, through the natural selection of those individuals best adapted for the reproductive success of their kind. Social Darwinism – A 19th-century theory, inspired by Darwinism, by which the social order is accounted as the product of natural selection of those persons best suited to existing living conditions. Mendelian Inheritance – Theory proposed by Gregor Johann Mendal in 1865 that became the first theory of genetic inheritance derived from experiments with peas. Birth Control – Any means to artificially prevent biological conception. Euthanasia – A policy of ending the life of an individual for their betterment (for example, because of excessive pain, brain dead, etc.) or society’s benefit. Genocide – A policy of murdering all members of a specific group of people who share a common characteristic. Deductive Logic – Deriving a specific conclusion based on a set of general definitions. Inductive Logic – Deriving a general conclusion based on a number of specific examples. Brief Historical Background: Eugenics was first proposed by Francis Galton in his 1883 work, Inquiries into Human Faculty and its Development. Galton was a cousin of Charles Darwin and an early supporter of Darwin’s theories of natural selection and evolution. Galton defined eugenics as the study of all agencies under human control which can improve or impair the racial quality of future generations. Galton’s work utilized a number of other scientific pursuits at the time including the study of heredity, genes, chromosomes, evolution, social Darwinism, zoology, birth control, sociology, psychology, chemistry, atomic theory and electrodynamics. The number of significant scientific advances was accelerating throughout the 19th century altering what science was and what its role in society could and should be. Galton’s work had a significant influence throughout all areas of society, from scientific communities to politics, culture and literature. A number of organizations were created to explore the science of eugenics and its possible applications to society. Ultimately, eugenics became a means by which to improve society through policies based on scientific study. Most of these policies related to reproductive practices within a society, specifically who could or should not reproduce. Throughout the late 1800s and early 1900s a number of policies were enacted at various levels throughout Europe and the United States aimed at controlling procreation. Some specific policies included compulsory sterilization laws (usually concerning criminals and the mentally ill) as well as banning interracial marriages to prevent ‘cross-racial’ breeding. In the United States a number of individuals and foundations supported the exploration of eugenics as a means to positively influence society, including: the Rockefeller Foundation, the Carnegie Institution, the Race Betterment Foundation of Battle Creek, MI, the Eugenics Record Office, the American Breeders Association, the Euthanasia Society of America; and individuals such as Charles Davenport, Madison Grant, Alexander Graham Bell, Irving Fisher, John D. Rockefeller, Margaret Sanger, Marie Stopes, David Starr Jordan, Vernon Kellogg, H. G. Wells (though he later changed sides) Winston Churchill, George Bernard Shaw, John Maynard Keynes, Supreme Court Justice Oliver Wendell Holmes and Presidents Woodrow Wilson, Herbert Hoover and Theodore Roosevelt. Some early critics of eugenics included: Dr. John Haycroft, Halliday Sutherland, Lancelot Hogben, Franz Boaz, Lester Ward, G. K. Chesterton, J. B. S. Haldane, and R. A. Fisher. In 1911 the Carnegie Institute recommended constructing gas chambers around the country to euthanize certain elements of the American population (primarily the poor and criminals) considered to be harmful to the future of society as a possible eugenic solution. President Woodrow Wilson signed the first Sterilization Act in US history. In the 1920s and 30s, 30 states passed various eugenics laws, some of which were overturned by the Supreme Court. Eugenics of various forms was a founding principle of the Progressive Party, strongly supported by the first progressive president Theodore Roosevelt, and would continue to play an important part in influencing progressive policies into at least the 1940s. Many American individuals and societies supported German research on eugenics that would eventually be used to develop and justify the policies utilized by the NAZI party against minority groups including Jews, Africans, gypsies and others that ultimately led to programs of genocide and the holocaust. Following WWII and worldwide exposure of the holocaust eugenics generally fell out of favor among the public, though various lesser forms of eugenics are still advocated for today by such individuals as Dottie Lamm, Geoffrey Miller, Justice Ruth Bader Ginsberg, John Glad and Richard Dawson. Eugenics still influences many modern debates including: capital punishment, over-population, global warming, medicine (disease control and genetic disorders), birth control, abortion, artificial insemination, evolution, social engineering, and education. Key Points to discuss during the debate: • Individual rights vs. collective rights • The pros and cons of genetically engineering society • The practicality of genetically engineering society • Methods used to determine ‘good traits’ and ‘bad traits’ • Who determines which people are ‘fit’ or ‘unfit’ for future society • The role of science in society • Methods used to derive scientific conclusions • Ability of scientists to determine the future hereditary conditions of individuals • The value/accuracy of scientific conclusions • The role of the government to implement eugenic policies • Some possible eugenic political policies or laws • The ways these policies may be used effectively or abused • The relationship between eugenics and individual rights • The role of ethics in science and eugenics Strategies: 1. Use this guide to help you (particularly the key points). 2. Read all of the texts. 3. If needed, read secondary analysis concerning eugenics. 4. Identify key quotations as you read each text. Perhaps make a list of them to print out and/or group quotes by topic or point. 5. Develop multiple arguments to defend your position. 6. Prioritize your arguments from most persuasive to least persuasive and from most evidence to least evidence. 7. Anticipate the arguments of your opponents and develop counter-arguments for them. 8. Anticipate counter-arguments to your own arguments and develop responses to them.

HST 102: Paper 7 Formal essay, due in class on the day of the debate No late papers will be accepted. Answer the following inquiry in a typed (and stapled) 2 page essay in the five-paragraph format. Present and describe three of your arguments that you will use to defend your position concerning eugenics. Each argument must be unique (don’t describe the same argument twice from a different angle). Each argument must include at least one quotation from the texts to support your position (a minimum of 3 total). You may discuss your positions and arguments with other people on your side (but not your opponents); however, each student must write their own essay in their own words. Do not copy sentences or paragraphs from another student’s paper, this is plagiarism and will result in a failing grade for the assignment. HST 102: Debate 4 Eugenics For or Against? Basics of the debate: The term ‘Eugenics’ was derived from two Greek words and literally means ‘good genes’. Eugenics is the social philosophy or practice of engineering society based on genes, or promoting the reproduction of good genes while reducing (or prohibiting) the reproduction of bad genes. Your group will argue either for or against the adoption of eugenic policies in your society. Key Terms: Eugenics – The study of or belief in the possibility of improving the qualities of the human species or a human population, especially by such means as discouraging reproduction by persons having genetic defects or presumed to have inheritable undesirable traits (negative eugenics) or encouraging reproduction by persons presumed to have inheritable desirable traits (positive eugenics). Darwinism – The Darwinian theory that species originate by descent, with variation, from parent forms, through the natural selection of those individuals best adapted for the reproductive success of their kind. Social Darwinism – A 19th-century theory, inspired by Darwinism, by which the social order is accounted as the product of natural selection of those persons best suited to existing living conditions. Mendelian Inheritance – Theory proposed by Gregor Johann Mendal in 1865 that became the first theory of genetic inheritance derived from experiments with peas. Birth Control – Any means to artificially prevent biological conception. Euthanasia – A policy of ending the life of an individual for their betterment (for example, because of excessive pain, brain dead, etc.) or society’s benefit. Genocide – A policy of murdering all members of a specific group of people who share a common characteristic. Deductive Logic – Deriving a specific conclusion based on a set of general definitions. Inductive Logic – Deriving a general conclusion based on a number of specific examples. Brief Historical Background: Eugenics was first proposed by Francis Galton in his 1883 work, Inquiries into Human Faculty and its Development. Galton was a cousin of Charles Darwin and an early supporter of Darwin’s theories of natural selection and evolution. Galton defined eugenics as the study of all agencies under human control which can improve or impair the racial quality of future generations. Galton’s work utilized a number of other scientific pursuits at the time including the study of heredity, genes, chromosomes, evolution, social Darwinism, zoology, birth control, sociology, psychology, chemistry, atomic theory and electrodynamics. The number of significant scientific advances was accelerating throughout the 19th century altering what science was and what its role in society could and should be. Galton’s work had a significant influence throughout all areas of society, from scientific communities to politics, culture and literature. A number of organizations were created to explore the science of eugenics and its possible applications to society. Ultimately, eugenics became a means by which to improve society through policies based on scientific study. Most of these policies related to reproductive practices within a society, specifically who could or should not reproduce. Throughout the late 1800s and early 1900s a number of policies were enacted at various levels throughout Europe and the United States aimed at controlling procreation. Some specific policies included compulsory sterilization laws (usually concerning criminals and the mentally ill) as well as banning interracial marriages to prevent ‘cross-racial’ breeding. In the United States a number of individuals and foundations supported the exploration of eugenics as a means to positively influence society, including: the Rockefeller Foundation, the Carnegie Institution, the Race Betterment Foundation of Battle Creek, MI, the Eugenics Record Office, the American Breeders Association, the Euthanasia Society of America; and individuals such as Charles Davenport, Madison Grant, Alexander Graham Bell, Irving Fisher, John D. Rockefeller, Margaret Sanger, Marie Stopes, David Starr Jordan, Vernon Kellogg, H. G. Wells (though he later changed sides) Winston Churchill, George Bernard Shaw, John Maynard Keynes, Supreme Court Justice Oliver Wendell Holmes and Presidents Woodrow Wilson, Herbert Hoover and Theodore Roosevelt. Some early critics of eugenics included: Dr. John Haycroft, Halliday Sutherland, Lancelot Hogben, Franz Boaz, Lester Ward, G. K. Chesterton, J. B. S. Haldane, and R. A. Fisher. In 1911 the Carnegie Institute recommended constructing gas chambers around the country to euthanize certain elements of the American population (primarily the poor and criminals) considered to be harmful to the future of society as a possible eugenic solution. President Woodrow Wilson signed the first Sterilization Act in US history. In the 1920s and 30s, 30 states passed various eugenics laws, some of which were overturned by the Supreme Court. Eugenics of various forms was a founding principle of the Progressive Party, strongly supported by the first progressive president Theodore Roosevelt, and would continue to play an important part in influencing progressive policies into at least the 1940s. Many American individuals and societies supported German research on eugenics that would eventually be used to develop and justify the policies utilized by the NAZI party against minority groups including Jews, Africans, gypsies and others that ultimately led to programs of genocide and the holocaust. Following WWII and worldwide exposure of the holocaust eugenics generally fell out of favor among the public, though various lesser forms of eugenics are still advocated for today by such individuals as Dottie Lamm, Geoffrey Miller, Justice Ruth Bader Ginsberg, John Glad and Richard Dawson. Eugenics still influences many modern debates including: capital punishment, over-population, global warming, medicine (disease control and genetic disorders), birth control, abortion, artificial insemination, evolution, social engineering, and education. Key Points to discuss during the debate: • Individual rights vs. collective rights • The pros and cons of genetically engineering society • The practicality of genetically engineering society • Methods used to determine ‘good traits’ and ‘bad traits’ • Who determines which people are ‘fit’ or ‘unfit’ for future society • The role of science in society • Methods used to derive scientific conclusions • Ability of scientists to determine the future hereditary conditions of individuals • The value/accuracy of scientific conclusions • The role of the government to implement eugenic policies • Some possible eugenic political policies or laws • The ways these policies may be used effectively or abused • The relationship between eugenics and individual rights • The role of ethics in science and eugenics Strategies: 1. Use this guide to help you (particularly the key points). 2. Read all of the texts. 3. If needed, read secondary analysis concerning eugenics. 4. Identify key quotations as you read each text. Perhaps make a list of them to print out and/or group quotes by topic or point. 5. Develop multiple arguments to defend your position. 6. Prioritize your arguments from most persuasive to least persuasive and from most evidence to least evidence. 7. Anticipate the arguments of your opponents and develop counter-arguments for them. 8. Anticipate counter-arguments to your own arguments and develop responses to them.