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1) A Carnot device operates between a cold reservoir of temperature 193 K and a hot reservoir of temperature 533 K. a) If the device

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1) A Carnot device operates between a cold reservoir of temperature 193 K and a hot reservoir of temperature 533 K. a) If the device operates as a heat engine, what is its efficiency? b) If the device operates as a heat pump, what is its coefficient of performance? c) If the device operates as a refrigerator, what is its coefficient of performance

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