A traveling heat pump salesman comes to your door and describes the performance of the heat pump he is trying to sell. The salesman notes that the cold space (located underground at your home) is a steady 10°C, and that you wish to deliver heat to your home at a temperature of 25°C. He says that the heat pump will use 500 W of power to deliver 10 kW of heat to your home. Does this claim violate the second law?
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