College Physics
2nd Edition
ISBN: 9780134601823
Author: ETKINA, Eugenia, Planinšič, G. (gorazd), Van Heuvelen, Alan
Publisher: Pearson,
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Chapter 16, Problem 35GP
(a)
To determine
The maximum efficiency of a
(b)
To determine
The output power of an engine operating between the temperature of the living organism and environment if rate of energy transfer from the living organism to the engine is
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Check out a sample textbook solutionChapter 16 Solutions
College Physics
Ch. 16 - Prob. 1RQCh. 16 - Prob. 2RQCh. 16 - Prob. 3RQCh. 16 - Prob. 4RQCh. 16 - Which of the following processes is reversible?...Ch. 16 - In physics the collision of billiard balls is...Ch. 16 - Prob. 3MCQCh. 16 - 4. When driving a car (the system), what object...Ch. 16 - 5. The law of energy conservation says that energy...Ch. 16 - Prob. 6MCQ
Ch. 16 - Entropy can be calculated using which of the...Ch. 16 - Prob. 8MCQCh. 16 - 9. When a drop of ink enters a glass of water and...Ch. 16 - 10. Choose the best reason why the following...Ch. 16 - Prob. 11MCQCh. 16 - Which of the following changes will always...Ch. 16 - Entropy change is easier to determine for...Ch. 16 - 14. Describe five everyday examples of processes...Ch. 16 - Prob. 15CQCh. 16 - 16. In terms of the statistical definition of...Ch. 16 - 17. The entropy of the molecules that form leaves...Ch. 16 - Prob. 18CQCh. 16 - Below, BIO indicates a problem with a biological...Ch. 16 - Below, BIO indicates a problem with a biological...Ch. 16 - Prob. 3PCh. 16 - Below, BIO indicates a problem with a biological...Ch. 16 - Prob. 5PCh. 16 - 6. (a) Identify all of the macrostate...Ch. 16 - 7. * Repeat the previous problem for a system with...Ch. 16 - * Determine the ratio of the number of microstates...Ch. 16 - Prob. 9PCh. 16 - 10. * Parachutists landing on island Parachutists...Ch. 16 - Prob. 11PCh. 16 - * Nine numbered balls are dropped randomly into...Ch. 16 - * Rolling dice Two dice are rolled Macrostates of...Ch. 16 - 14.* (a) Apply your knowledge of probability to...Ch. 16 - Explain using your knowledge of probability why a...Ch. 16 - * EST Estimate the total change in entropy of two...Ch. 16 - 17. * EST (a) You add 0.1 kg of water at of iced...Ch. 16 - * Entropy change of a house A house at 20C...Ch. 16 - 19. ** Barrel of water in cellar in winter A...Ch. 16 - 20. * EST (a) Determine the final temperature when...Ch. 16 - * A 5.0-kg block slides on a level surface and...Ch. 16 - with the horizontal. Determine the entropy change...Ch. 16 - Prob. 23PCh. 16 - * BIO Efficiency of woman walking A 60-kg woman...Ch. 16 - Prob. 25PCh. 16 - 26. ** A cyclic process involving 1 mole of ideal...Ch. 16 - 27. ** A cyclic process involving 1 mole of ideal...Ch. 16 - Prob. 28PCh. 16 - Prob. 29PCh. 16 - Prob. 30PCh. 16 - Prob. 31PCh. 16 - 32. Rank the engines that operate with the...Ch. 16 - 33. Nuclear power plant A nuclear power plant...Ch. 16 - Prob. 34PCh. 16 - Prob. 35GPCh. 16 - W=AUint. W=(3.0)105N/m2 )(0.020m30.010m3)+0...Ch. 16 - * A thermodynamic engine operates between two...Ch. 16 - 38. * A refrigerator transfers 700 J of thermal...Ch. 16 - Prob. 39RPPCh. 16 - Prob. 40RPPCh. 16 - Fuel used to counter air resistance The resistive...Ch. 16 - Prob. 42RPPCh. 16 - Prob. 43RPPCh. 16 - The value of CA for a Ford Escape Hybrid is...
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- (a) Calculate the energy in kJ used by a 55.0-kg woman who does 50 deep knee bends in which her center of mass is lowered and raised 0.400 m. (She does work in both directions.) You may assume her efficiency is 20%. (b) What is the average power consumption rate in watts if she does this in 3.00 min?arrow_forwardShoveling snow can be extremely taxing because the arms have such a low efficiency in this activity. Suppose a person shoveling a footpath metabolizes food at the rate of 800 W. (a) What is her useful power output? (b) How long will it take her to lift 3000 kg of snow 1.20 m? (This could be the amount of heavy snow on 20 m of footpath.) (c) How much waste heat transfer in kilojoules will she generate in the process?arrow_forward(a) What is the average power consumption in watts of an appliance that uses 5.00 kW h of energy per day? (b) How many joules of energy does this appliance consume in a year?arrow_forward
- (a) Calculate the work done on a 1500-kg elevator car by its cable to lift it 40.0 m at constant speed, assuming friction averages 100 N. (b) What is the work done on the lift by the gravitational force in this process? (c) What is the total work done on the lift?arrow_forward(a) How long will the energy in a 1470kJ (350kcal) cup of yogurt last in a woman doing work at the rate of 150 W with an efficiency of 20.0% (such as in leisurely climbing stairs)? (b) Does the time found in part (a) imply that it is easy to consume more food energy than you can reasonably expect to work off with exercise?arrow_forward(a) What is the efficiency of an out-of-condition professor who does 2.10105J of useful work while metabolizing 500 kcal of food energy? (b) How many food calories would a well-conditioned athlete metabolize in doing the same work with an efficiency of 20%?arrow_forward
- (a) What is the available energy content, in joules, of a battery that operates a 2.00-W electric clock for 18 months? (b) How long can a battery that can supply 8.00104 J run a pocket calculator that consumes energy at the rate of 1.00103 ?arrow_forwardMountain climbers carry bottled oxygen when at very high altitudes. (a) Assuming that a mountain climber uses oxygen at twice the rate for climbing 116 stairs per minute (because of low air temperature and winds), calculate how many liters of oxygen a climber would need for 10.0 h of climbing. (These are liters at sea level.) Note that only 40% of the inhaled oxygen is utilized; the rest is exhaled. (b) How much useful work does the climber do if he and his equipment have a mass of 90.0 kg and he gains 1000 m of altitude? (c) What is his efficiency for the 10.0-h climb?arrow_forwardA large electrical power station generates 1000 MW of electricity with an efficiency of 35.0%. (a) Calculate the heat transfer to the power station, Qh, in one day. (b) How much heat transfer Qc occurs to the environment in one day? (c) If the heat transfer in the cooling towers is from 35.0C water into the local air mass, which increases in temperature from 18.0C to 20.0C, what is the total increase in entropy due to this heat transfer? (d) How much energy becomes unavailable to do work because of this increase in entropy, assuming an 18.0C lowest temperature? (Part of Qccould be utilized to operate heat engines or far simply heating the surroundings, but it rarely is.)arrow_forward
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