quiz3 - Exam Name_ MULTIPLE CHOICE. Choose the one...

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Exam Name___________________________________ MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the question. 1) A reversible heat engine operates between T c = 10 degree Celsius and T h = 100 degree Celsius. What is its efficiency? A) 0.9 B) 0.6 C) 0.3 D) 0.0 1) 2) Why does it require effort to keep order in your dorm room? A) Because disorder is energetically favored. B) Because humans have a natural affinity towards disorder. C) Because of the many ways of arranging one's dorm room only few are perceived as ordered. D) Because there's a force of nature towards disorder. 2) 3) An ideal gas goes through a free expansion from a volume of 3 cubic meters to a volume of 9 cubic meters. What's the change in entropy? A) nRln2 B) -nRln2 C) nR D) depends on the temperature of the ideal gas E) 2nR 3) 4) "The entropy of the universe can only increase." Is this an absolute statement or simply an excellent approximation? A) It is the truth and nothing but the truth.
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quiz3 - Exam Name_ MULTIPLE CHOICE. Choose the one...

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