The maximum efficiency of a heat engine is 1 (or). Can the COP of a thermal pump be greater than 1? Explain.
Answer to relevant QuestionsDiesel engines are more efficient than gasoline engines. Which type of engine wold you expect to run hotter? Why? While playing in a tennis match, you lost 6.5 x 105 of heat, and your internal energy also decreased by 1.2 x 106J. How much work did you do in the match? The temperature of 2.0 mol of ideal gas is increased from 150 oC to 250 oC by two different processes. In process A, 2500 J of heat is added to the gas; in process B, 3000 J of heat is added. (a) In which case is more work ...In an isothermal expansion at 27 oC, an ideal gas does 60 J of work. What is the change in entropy of the gas? A 50.0-g ice cube at oC is placed in 500mL of water at 20 oC. Estimate the change in entropy (after all the ice has melted) (a) For the ice, (b) For the water, and (c) For the ice–water system.
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