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17. What is AU for a cyclical process? 18. For a refrigerator, where is the hot reservoir and where is the cold reservoir? 19. For a heat pump, where is the hot reservoir and where is the cold reservoir? 20. An inventor claims that they have created an engine that is more efficient than a Carnot engi between the same two temperatures. Why are they lying?
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Selnbrn Tehern to the hame stae /2 0

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