A Heat Engine Operates Between 200 K and 100 K

question 43

Multiple Choice

A heat engine operates between 200 K and 100 K.In each cycle it takes 100 J from the hot reservoir, loses 25 J to the cold reservoir, and does 75 J of work.This heat engine violates:

• A)both the first and second laws of thermodynamics
• B)the first law but not the second law of thermodynamics
• C)the second law but not the first law of thermodynamics
• D)neither the first law nor the second law of thermodynamics
• E)cannot answer without knowing the mechanical equivalent of heat

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