F7.10 The flame spread rate through porous solids increases with concurrent wind velocity. decreases with concurrent wind velocity. is independent of concurrent wind velocity. F7.11 Surface tension accelerates opposed-flow flame spread over liquid fuels. True False F7.12 Opposed-flow flame spread rates over a solid surface are typically much smaller than 1 mm/s. around 1mm/s. much greater than 1 mm/s. F7.13 Upward flame spread rate over a vertical surface is typically between 10 and 1000 mm/s. True False F7.14 The Steiner tunnel test described in ASTM standard E 84 is used to assess the fire performance of interior finish materials based on lateral flame spread over a vertical sample. True False F8.1 Describe the triad of fire growth. F8.2 Liquid pool fires reach steady burning conditions within seconds after ignition. True False F8.3 The heat of gasification of liquid fuels is typically less than 1 kJ/g. between 1 and 3 kJ/g. greater than 3 kJ/g. F8.4 The heat flux from the flame to the surface of real burning objects can usually be determined with sufficient accuracy so that reasonable burning rate predictions can be made. True False F8.5 The mass burning flux generally associated with extinction is 0.5 g/m2s. 5 g/m2s. 50 g/m2s. F8.6 The mass burning flux of a liquid pool fire is a function of only the pool diameter. only the fuel type. pool diameter and fuel type. F8.7 The energy release rate of real objects can be measured in an oxygen bomb calorimeter. an oxygen consumption calorimeter. a room/corner test. F8.8 The peak energy release rate of typical domestic upholstered furniture can be as high as 3000 kW. True False F8.9 Draw a typical curve of the mass burning flux of a char forming fuel as a function of time. F8.10 A fast fire as defined in NFPA 72B grows proportionally to t2 and reaches an energy release rate of 1 MW in 75 sec. 150 sec. 300 sec. F9.1 Air entrainment into turbulent pool fire flames is due to buoyancy. True False F9.2 The frequency of vortex shedding in turbulent pool fire flames increases with pool diameter. decreases with pool diameter. is independent of pool diameter. F9.3 The height of turbulent jet flames for a given fuel type and orifice size is independent of energy release rate. True False F9.4 The exit velocities of fuel vapors leaving a solid or liquid pool fire surface are responsible for entrainment of air in the plume. True False F9.5 The height of a turbulent pool fire flame is a function of only energy release rate. only pool diameter. energy release rate and pool diameter. F9.6 Turbulent pool fire flame heights fluctuate in time within a factor of 2. True False F9.7 The Q* value for jet fires is 102 or greater. 104 or greater. 106 or greater. F9.8 The temperature in the continuous flame region of moderate size turbulent pool fires is approximately 820°C. True False F9.9 The temperature at the maximum flame height of a turbulent pool fire flame is approximately 1200°C. 800°C. 300°C. F9.10 The adiabatic flame temperature of hydrocarbon fuels is 1700-2000°C. 2000-2300°C. 2300-2600°C. F10.1 The stoichiometric air to fuel mass ratio of hydrocarbon fuels is of the order of 1.5 g/g. 15 g/g. 150 g/g. F10.2 Give two examples of products of incomplete combustion that occur in fires. F10.3 Slight amounts of products of incomplete combustion are generated in overventilated fires. True False F10.4 The CO yield of a fire is a function of only the fuel involved. only the ventilation conditions. the fuel and the ventilation conditions. F10.5 A carboxyhemoglobin level of 40% in the blood is usually lethal. True (doubt) False F10.6 Carbon monoxide is the leading killer of people in fires. True False F10.7 HCN is a narcotic gas. an irritant gas. a fuel vapor. F10.8 The hazard to humans from narcotic gases is a function of only the concentration of the gas. only the duration of exposure. the product of concentration and duration of exposure. F10.9 The effects on lethality of CO, HCN, and reduced O2 are additive. True False F10.10 Irritant gases typically cause post-exposure fatalities. True False F10.11 Visibility through smoke improves with increasing optical density. True False F10.12 Heat stress occurs when the skin is exposed to a heat flux of 1 kW/m2. the skin reaches a temperature of 45°C. the body’s core temperature reaches 41°C.

F7.10 The flame spread rate through porous solids increases with concurrent wind velocity. decreases with concurrent wind velocity. is independent of concurrent wind velocity. F7.11 Surface tension accelerates opposed-flow flame spread over liquid fuels. True False F7.12 Opposed-flow flame spread rates over a solid surface are typically much smaller than 1 mm/s. around 1mm/s. much greater than 1 mm/s. F7.13 Upward flame spread rate over a vertical surface is typically between 10 and 1000 mm/s. True False F7.14 The Steiner tunnel test described in ASTM standard E 84 is used to assess the fire performance of interior finish materials based on lateral flame spread over a vertical sample. True False F8.1 Describe the triad of fire growth. F8.2 Liquid pool fires reach steady burning conditions within seconds after ignition. True False F8.3 The heat of gasification of liquid fuels is typically less than 1 kJ/g. between 1 and 3 kJ/g. greater than 3 kJ/g. F8.4 The heat flux from the flame to the surface of real burning objects can usually be determined with sufficient accuracy so that reasonable burning rate predictions can be made. True False F8.5 The mass burning flux generally associated with extinction is 0.5 g/m2s. 5 g/m2s. 50 g/m2s. F8.6 The mass burning flux of a liquid pool fire is a function of only the pool diameter. only the fuel type. pool diameter and fuel type. F8.7 The energy release rate of real objects can be measured in an oxygen bomb calorimeter. an oxygen consumption calorimeter. a room/corner test. F8.8 The peak energy release rate of typical domestic upholstered furniture can be as high as 3000 kW. True False F8.9 Draw a typical curve of the mass burning flux of a char forming fuel as a function of time. F8.10 A fast fire as defined in NFPA 72B grows proportionally to t2 and reaches an energy release rate of 1 MW in 75 sec. 150 sec. 300 sec. F9.1 Air entrainment into turbulent pool fire flames is due to buoyancy. True False F9.2 The frequency of vortex shedding in turbulent pool fire flames increases with pool diameter. decreases with pool diameter. is independent of pool diameter. F9.3 The height of turbulent jet flames for a given fuel type and orifice size is independent of energy release rate. True False F9.4 The exit velocities of fuel vapors leaving a solid or liquid pool fire surface are responsible for entrainment of air in the plume. True False F9.5 The height of a turbulent pool fire flame is a function of only energy release rate. only pool diameter. energy release rate and pool diameter. F9.6 Turbulent pool fire flame heights fluctuate in time within a factor of 2. True False F9.7 The Q* value for jet fires is 102 or greater. 104 or greater. 106 or greater. F9.8 The temperature in the continuous flame region of moderate size turbulent pool fires is approximately 820°C. True False F9.9 The temperature at the maximum flame height of a turbulent pool fire flame is approximately 1200°C. 800°C. 300°C. F9.10 The adiabatic flame temperature of hydrocarbon fuels is 1700-2000°C. 2000-2300°C. 2300-2600°C. F10.1 The stoichiometric air to fuel mass ratio of hydrocarbon fuels is of the order of 1.5 g/g. 15 g/g. 150 g/g. F10.2 Give two examples of products of incomplete combustion that occur in fires. F10.3 Slight amounts of products of incomplete combustion are generated in overventilated fires. True False F10.4 The CO yield of a fire is a function of only the fuel involved. only the ventilation conditions. the fuel and the ventilation conditions. F10.5 A carboxyhemoglobin level of 40% in the blood is usually lethal. True (doubt) False F10.6 Carbon monoxide is the leading killer of people in fires. True False F10.7 HCN is a narcotic gas. an irritant gas. a fuel vapor. F10.8 The hazard to humans from narcotic gases is a function of only the concentration of the gas. only the duration of exposure. the product of concentration and duration of exposure. F10.9 The effects on lethality of CO, HCN, and reduced O2 are additive. True False F10.10 Irritant gases typically cause post-exposure fatalities. True False F10.11 Visibility through smoke improves with increasing optical density. True False F10.12 Heat stress occurs when the skin is exposed to a heat flux of 1 kW/m2. the skin reaches a temperature of 45°C. the body’s core temperature reaches 41°C.

F7.10 The flame spread rate through porous solids increases with … Read More...
Work is done on a system with the only result of increasing the PE of the system. If 5.24 kJ of work are done, what is the change in PE of the system? Express your answer in units of BTUs. (REPORT your answer to 2 decimal places)

Work is done on a system with the only result of increasing the PE of the system. If 5.24 kJ of work are done, what is the change in PE of the system? Express your answer in units of BTUs. (REPORT your answer to 2 decimal places)

Selected Answer: 4.96
MAE 384. Advanced Mathematical Methods for Engineers. The army is interested in characterizing the acoustic signature of a helicopter. The following data show measurements of acoustic pressure (made dimensionless) for a two-bladed helicopter rotor through 1 2 of a rotor revolution. The data points are equally spaced in time, and the period of the data collection is 1 6 of a second. p0 = [ 0 0.0004 0.0015 0.0028 0.0040 0.0048 0.0057 0.0071 0.0095 0.0134 . . . 0.0185 0.0242 0.0302 0.0364 0.0447 0.0577 0.0776 0.0955 0.0907 -0.0477 . . . -0.0812 -0.0563 -0.0329 -0.0127 0.0032 0.0147 0.0221 0.0256 0.0255 0.0222 . . . 0.0170 0.0112 0.0064 0.0035 0.0023 0.0020 0.0019 0.0016 0.0009 0.0002 ] (a) Find the real Discrete Fourier Transform for this data set. That is, …nd the Fourier coe¢ cients (the Ak’s and Bk’s). (b) Any term in the Fourier series can be written: Ak cos(k!t) + Bk sin(k!t) = Ck cos(k!t + k) where Ck = q A2 k + B2 k and k = tan?1 ?Bk Ak Find the Ck’s and plot their amplitude vs. k to illustrate the relative size of each term in the series. (The amplitude should drop of with increasing k.) (c) Plot the function (Fourier series) and the original data on the same plot. (d) The actual loudness of the helicopter depends on the maximum peak-to-peak amplitude of the signal. Find the peak-to-peak amplitude by …nding the maximum and minimum values of p0 as predicted by the Fourier series solution. Recall that a function has a maximum or a minimum when its derivative equals zero. (e) Extra Credit. Try …nding Ak’s and Bk’s for k > N 2 (where N = the number of data points). Show that the resulting series does not represent the data.

MAE 384. Advanced Mathematical Methods for Engineers. The army is interested in characterizing the acoustic signature of a helicopter. The following data show measurements of acoustic pressure (made dimensionless) for a two-bladed helicopter rotor through 1 2 of a rotor revolution. The data points are equally spaced in time, and the period of the data collection is 1 6 of a second. p0 = [ 0 0.0004 0.0015 0.0028 0.0040 0.0048 0.0057 0.0071 0.0095 0.0134 . . . 0.0185 0.0242 0.0302 0.0364 0.0447 0.0577 0.0776 0.0955 0.0907 -0.0477 . . . -0.0812 -0.0563 -0.0329 -0.0127 0.0032 0.0147 0.0221 0.0256 0.0255 0.0222 . . . 0.0170 0.0112 0.0064 0.0035 0.0023 0.0020 0.0019 0.0016 0.0009 0.0002 ] (a) Find the real Discrete Fourier Transform for this data set. That is, …nd the Fourier coe¢ cients (the Ak’s and Bk’s). (b) Any term in the Fourier series can be written: Ak cos(k!t) + Bk sin(k!t) = Ck cos(k!t + k) where Ck = q A2 k + B2 k and k = tan?1 ?Bk Ak Find the Ck’s and plot their amplitude vs. k to illustrate the relative size of each term in the series. (The amplitude should drop of with increasing k.) (c) Plot the function (Fourier series) and the original data on the same plot. (d) The actual loudness of the helicopter depends on the maximum peak-to-peak amplitude of the signal. Find the peak-to-peak amplitude by …nding the maximum and minimum values of p0 as predicted by the Fourier series solution. Recall that a function has a maximum or a minimum when its derivative equals zero. (e) Extra Credit. Try …nding Ak’s and Bk’s for k > N 2 (where N = the number of data points). Show that the resulting series does not represent the data.

clear all; clc; period = 1/6; p = [0       0.0004 … Read More...
Lab Report Name Simple Harmonic motion Date: Objective or purpose: The main objective of this lab is to find the value of the spring constant (k) according to Hooke’s law. This lab also teaches us curve fitting and its application here in this lab.

Lab Report Name Simple Harmonic motion Date: Objective or purpose: The main objective of this lab is to find the value of the spring constant (k) according to Hooke’s law. This lab also teaches us curve fitting and its application here in this lab.

Name Simple Harmonic motion Date:           … Read More...
A catalyst can increase the rate of a reaction __________. A) by changing the value of the frequency factor (A) B) by increasing the overall activation energy (Ea) of the reaction C) by lowering the activation energy of the reverse reaction D) by providing an alternative pathway with a lower activation energy E) All of these are ways that a catalyst might act to increase the rate of reaction

A catalyst can increase the rate of a reaction __________. A) by changing the value of the frequency factor (A) B) by increasing the overall activation energy (Ea) of the reaction C) by lowering the activation energy of the reverse reaction D) by providing an alternative pathway with a lower activation energy E) All of these are ways that a catalyst might act to increase the rate of reaction

D) by providing an alternative pathway with a lower activation … Read More...
1-In _____ auctions, there is one buyer who wants to buy a product. Suppliers submit bids, and the lowest bid wins. forward static reverse physical simple 2- Which of the following is NOT an effect that e-commerce has had on organizations? E-commerce enables smaller businesses to operate in areas dominated by larger companies. E-commerce increases the number of potential customers to whom the company can market its products. E-commerce is a costly medium for increasing market share. E-commerce removes many barriers for start-up businesses. E-commerce makes it easy to reach customers around the world. 3- The degree of digitization relates to all of the following except: the product or service sold the process by which the product is produced the delivery agent or intermediary the size of e-commerce transactions None of these 4- In _______ e-commerce, the sellers and buyers are organizations. government-to-citizen consumer-to-consumer business-to-business business-to-consumer consumer-to-business 5- BitTorrent uses a process called _____, which eliminates file-sharing bottlenecks by having everyone share little pieces of a file at the same time. leeching collaboration packet switching torrents swarming 6- eBay uses a _____ auction. forward static reverse physical simple 7- A(n) _____ is a network designed to serve the internal informational needs of a single organization. global network extranet internet intranet World Wide Web 8- _____ are internet access points that are located in public places, such as libraries and airports. Clients Servers Internet access computers Network computer Internet kiosks 9- Consider this domain name: www.business.gsu.edu. The “edu” is the _______. top-level domain URL website locator name of the computer address of the webmaster 10- Internet service providers connect to one another through _____. internet connection points common carrier connection points network access points network connection points an extranet

1-In _____ auctions, there is one buyer who wants to buy a product. Suppliers submit bids, and the lowest bid wins. forward static reverse physical simple 2- Which of the following is NOT an effect that e-commerce has had on organizations? E-commerce enables smaller businesses to operate in areas dominated by larger companies. E-commerce increases the number of potential customers to whom the company can market its products. E-commerce is a costly medium for increasing market share. E-commerce removes many barriers for start-up businesses. E-commerce makes it easy to reach customers around the world. 3- The degree of digitization relates to all of the following except: the product or service sold the process by which the product is produced the delivery agent or intermediary the size of e-commerce transactions None of these 4- In _______ e-commerce, the sellers and buyers are organizations. government-to-citizen consumer-to-consumer business-to-business business-to-consumer consumer-to-business 5- BitTorrent uses a process called _____, which eliminates file-sharing bottlenecks by having everyone share little pieces of a file at the same time. leeching collaboration packet switching torrents swarming 6- eBay uses a _____ auction. forward static reverse physical simple 7- A(n) _____ is a network designed to serve the internal informational needs of a single organization. global network extranet internet intranet World Wide Web 8- _____ are internet access points that are located in public places, such as libraries and airports. Clients Servers Internet access computers Network computer Internet kiosks 9- Consider this domain name: www.business.gsu.edu. The “edu” is the _______. top-level domain URL website locator name of the computer address of the webmaster 10- Internet service providers connect to one another through _____. internet connection points common carrier connection points network access points network connection points an extranet

1-In _____ auctions, there is one buyer who wants to … Read More...
The stated purpose of the nursing profession is to “deliver excellent care to each patient through the management of resources and to maintain a professional work environment to ensure competence and satisfaction.” In managing nursing services as a CNO, COO, or CEO, how would you measure the performance of your nursing department toward meeting this purpose? List specific dimensions and provide specific examples for the type of healthcare facility that you would like to manage (hospital, clinic, long-term care, home care, or other). Healthcare facility: Hospital

The stated purpose of the nursing profession is to “deliver excellent care to each patient through the management of resources and to maintain a professional work environment to ensure competence and satisfaction.” In managing nursing services as a CNO, COO, or CEO, how would you measure the performance of your nursing department toward meeting this purpose? List specific dimensions and provide specific examples for the type of healthcare facility that you would like to manage (hospital, clinic, long-term care, home care, or other). Healthcare facility: Hospital

All the hospitals are facing increasing demands to forcefully participate … Read More...
A rectangle loop with electrical resistance of 5 ohms sits in the magnetic field which point into the page. If the field is increasing at the rate of 0.4 T/sec, find the current in the loop. A) 6.4mA B) 64mA C) .60mA D) 160mA E) 20mA.

A rectangle loop with electrical resistance of 5 ohms sits in the magnetic field which point into the page. If the field is increasing at the rate of 0.4 T/sec, find the current in the loop. A) 6.4mA B) 64mA C) .60mA D) 160mA E) 20mA.

7. What are the major considerations regarding logistics alliances, for: a) initiation? b) Implementation? c) Maintenance? d) Termination?

7. What are the major considerations regarding logistics alliances, for: a) initiation? b) Implementation? c) Maintenance? d) Termination?

In addition to running the internal organization, supply chain executives … Read More...