Physics of Everyday Phenomena W. Thomas Griffith Juliet W. Brosing Chapter 11 Copyright © The McGraw-Hill Companies, Inc. Permission required for reproduction or display.

Question 11.1 A heat engine A)converts all the heat supplied to it to mechanical work B)always rejects some heat to a lower temperature reservoir C)only needs one reservoir to operate

Question 11.2 The efficiency of a heat engine is given by the ratio of A)net work done/amount of heat supplied B)net work done/amount of heat lost C)amount of heat supplied/amount of heat lost D)amount of heat supplied/new work done

Question 11.3 The Kelvin form of the second law of thermodynamics states that A)an engine can take heat from a single reservoir and convert it all to work B)no engine can take heat from a single reservoir and convert it all to work C)an engine can have a greater efficiency than a Carnot engine

Question 11.4 The significance of a Carnot engine is that A) all automobiles operate on the Carnot cycle B) it has the maximum possible efficiency of any engine operating between the same two temperatures C) it violates the second law of thermodynamics D) it violates the first law of thermodynamics

Question 11.5 The Clausius form of the second law of thermodynamics states that A)it is impossible to make heat flow from a colder to a hotter body B)heat naturally flows from a colder to a hotter body C)heat will not flow from a colder to a hotter body unless some other effect is involved

Question 11.6 The entropy of the universe A)is always decreasing B)is conserved C)is impossible to calculate D)can only increase or remain constant

Question 11.7 It's hot as blue blazes outside so you stand in front of your refrigerator with the door open to cool off. If you stand there long enough, A)the room will eventually get colder. B)the room will stay the same temperature. C)the room will eventually get warmer.

Question 11.8 Which of the following sources of electric power is NOT an example of a heat engine? A) Fossil fuels B) Geothermal C) Wind energy D) Flat plate solar collectors

Question 11.9 Which of the following processes is approximately reversible? a) lighting a match b) pushing a block up a frictionless inclined plane c) frying an egg d) swimming across a pool e) stretching a spring by a small amount A)b only B)e only C)b, d and e D)b and e

Question The second law of thermodynamics A)describes the state of a system. B)applies only when the first law is satisfied. C)precludes perpetual motion machines. D)does not apply to an isolated system.

Question A perpetual motion machine of the first kind A)violates the first law of thermodynamics B)would be a good investment C)violates the second law of thermodynamics D)violates the zeroth law of thermodynamics

Question A perpetual motion machine of the second kind A)violates the first law of thermodynamics B)would be a good investment C)violates the second law of thermodynamics D)violates the zeroth law of thermodynamics

Answer Key to Chapter 11 1) B 2) A 3) B 4) B 5) C 6) D 7) C 8) C 9) D 10) C 11) A 12) C