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A.) The water in a deep underground well is used as the cold reservoir of a Carnot heat pump that maintains the temperature of a house at 294 K. To deposit 14380 J of heat in the house, the heat pump requires 819 J of work. Determine the temperature of the well water. Give answer in K. Do not enter unit.

B.) How long would a 2.60 kW space heater have to run to put into a kitchen the same amount of heat as a refrigerator (coefficient of performance = 2.69) does when it freezes 1.68 kg of water at 20.2°C into ice at 0°C?

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  • Category:- Physics
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