Question: A reversible heat engine operates between a hot reservoir at 580 K and a cold reservoir of unknown temperature. After 5 min, the engine has

A reversible heat engine operates between a hot reservoir at 580 K and a cold reservoir of unknown temperature. After 5 min, the engine has absorbed 1000 J of energy from the hot reservoir and expelled 500 J of energy to the cold reservoir. What is the temperature of the cold reservoir?

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