Another property we use is frequency. Frequency (f) is the number of cycles per second. We measure frequency in units of Hertz, (Hz). Frequency is the inverse of the time for one complete cycle. We call the time for one complete cycle the period (T) and measure in units of time. A complete cycle includes every possible value that repeats.What is the frequency of the signal?

Another property we use is frequency. Frequency (f) is the number of cycles per second. We measure frequency in units of Hertz, (Hz). Frequency is the inverse of the time for one complete cycle. We call the time for one complete cycle the period (T) and measure in units of time. A complete cycle includes every possible value that repeats.What is the frequency of the signal?

Frequency = 1/T =1/7 Hz   Another property we use … Read More...
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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Research and Study Skills Module Assessment 1 Information. Bibliography This is designed to help set you up for the coming academic year/s. The Bibliography will provide you with vital references for every module undertaken during this postgraduate course. Clearly, a thorough Bibliography will help with this ICA, but also with successive coursework and practice. Your Bibliography will be split into 2 sections, you must pick 2 subjects from the 3 listed for your subject area: Civil Engineering: 1. Coastal protection and sea defence methods; 2. Bearing capacity, settlement and ground modification 3. Project planning methods utilised in civil engineering projects. Energy and Environmental Management: 1 Energy generation by geothermal means 2 The physical science base for climate change 3 Life Cycle Assessment (LCA) Project Management 1. IT in Construction Industry 2. Development of Project manager Competency 3. Project Success: Project management Biotechnology 1. Biofuel production using Algae 2. Use of Genetically Modified Organisms and Health and Safety measures 3. Genetic disease and gene-therapy treatment Electronics and Communications 1. Transistors, amplifiers and analogue circuits design 2. Wireless telecommunications 3. Industrial communications protocols Control and Electronics 1. Transistors, amplifiers and analogue circuits design 2. Robust control system design 3. Model predictive control Mechanical Engineering 1. Finite Element Methods 2. Machine Design 3. Applied Continuum Mechanics or Automotive Engineering & Vehicle Design Advanced Manufacturing Systems 1. Finite Element Methods 2. Manufacturing Process Technology or Manufacturing Systems 3. Production Management Petroleum Engineering 1. Enhanced Oil Recovery Methods (screening criteria) 2. Horizontal drilling technology (why and how) 3. Types of oil & gas separators (performance affecting parameters) You must choose two areas for your subject area to seek out suitable reference material for. In the first section, you must critically select between 10 and 15 key references from one of your subject areas and provide a 300 word summary of the content of one of these references. In the second section, you must again select between 10 and 15 references from the second of your subject areas and then produce a 600 word critical comparison of two of these references. In this critical comparison you should be comparing the research conducted in each of your two chosen sources to one another. The Bibliography should be in the Harvard format. Marks for the assessed bibliography will be distributed for the following criteria: 1. Appropriateness of references (25%) 2. Range of sources (25%) 3. Appropriate content of summaries (40%) 4. Format (10%)

Research and Study Skills Module Assessment 1 Information. Bibliography This is designed to help set you up for the coming academic year/s. The Bibliography will provide you with vital references for every module undertaken during this postgraduate course. Clearly, a thorough Bibliography will help with this ICA, but also with successive coursework and practice. Your Bibliography will be split into 2 sections, you must pick 2 subjects from the 3 listed for your subject area: Civil Engineering: 1. Coastal protection and sea defence methods; 2. Bearing capacity, settlement and ground modification 3. Project planning methods utilised in civil engineering projects. Energy and Environmental Management: 1 Energy generation by geothermal means 2 The physical science base for climate change 3 Life Cycle Assessment (LCA) Project Management 1. IT in Construction Industry 2. Development of Project manager Competency 3. Project Success: Project management Biotechnology 1. Biofuel production using Algae 2. Use of Genetically Modified Organisms and Health and Safety measures 3. Genetic disease and gene-therapy treatment Electronics and Communications 1. Transistors, amplifiers and analogue circuits design 2. Wireless telecommunications 3. Industrial communications protocols Control and Electronics 1. Transistors, amplifiers and analogue circuits design 2. Robust control system design 3. Model predictive control Mechanical Engineering 1. Finite Element Methods 2. Machine Design 3. Applied Continuum Mechanics or Automotive Engineering & Vehicle Design Advanced Manufacturing Systems 1. Finite Element Methods 2. Manufacturing Process Technology or Manufacturing Systems 3. Production Management Petroleum Engineering 1. Enhanced Oil Recovery Methods (screening criteria) 2. Horizontal drilling technology (why and how) 3. Types of oil & gas separators (performance affecting parameters) You must choose two areas for your subject area to seek out suitable reference material for. In the first section, you must critically select between 10 and 15 key references from one of your subject areas and provide a 300 word summary of the content of one of these references. In the second section, you must again select between 10 and 15 references from the second of your subject areas and then produce a 600 word critical comparison of two of these references. In this critical comparison you should be comparing the research conducted in each of your two chosen sources to one another. The Bibliography should be in the Harvard format. Marks for the assessed bibliography will be distributed for the following criteria: 1. Appropriateness of references (25%) 2. Range of sources (25%) 3. Appropriate content of summaries (40%) 4. Format (10%)

Section 1: Transistors, amplifiers and analogue circuits design   References: … Read More...
Define the term “creep” and discuss its significance in the design of polymer components.

Define the term “creep” and discuss its significance in the design of polymer components.

Creep is a time- dependent deformation under a certain applied … Read More...
1. a. Fumarase is an enzyme in the citric acid cycle that catalyzes the conversion of fumarate to L-malate. Given the substrate (fumarate) concentrations and initial velocities shown below, construct a Lineweaver-Burk plot and determine the Vmax and Km values for the fumarase-catalyzed reaction. You may attach the graph to this assignment. Fumarate (mM) Rate (mmol-1min-1) 2.0 2.5 3.3 3.1 5.0 3.6 10.0 4.2 b. Fumarase has a MW of 194,000 and has 4 identical subunits, each with an active site. If the enzyme concentration is 1 x 10-2 M for the experiment in part a, calculate the kcat value for the reaction of fumarase with fumarate. 1. An enzyme which follows Michaelis-Menten kinetics has a Km of 1 µm. The initial velocity is 0.1 µM min-1 at a substrate concentration of 100 µM. What is the initial velocity when the [S] is equal to: (a) 1 mM (b) 1 µM (c) 4 µM Note: Show your work.

1. a. Fumarase is an enzyme in the citric acid cycle that catalyzes the conversion of fumarate to L-malate. Given the substrate (fumarate) concentrations and initial velocities shown below, construct a Lineweaver-Burk plot and determine the Vmax and Km values for the fumarase-catalyzed reaction. You may attach the graph to this assignment. Fumarate (mM) Rate (mmol-1min-1) 2.0 2.5 3.3 3.1 5.0 3.6 10.0 4.2 b. Fumarase has a MW of 194,000 and has 4 identical subunits, each with an active site. If the enzyme concentration is 1 x 10-2 M for the experiment in part a, calculate the kcat value for the reaction of fumarase with fumarate. 1. An enzyme which follows Michaelis-Menten kinetics has a Km of 1 µm. The initial velocity is 0.1 µM min-1 at a substrate concentration of 100 µM. What is the initial velocity when the [S] is equal to: (a) 1 mM (b) 1 µM (c) 4 µM Note: Show your work.

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