A heat pump operates between reservoirs at 299 K (inside the house) and 257 K (outside)....

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A heat pump operates between reservoirs at 299 K (inside the house) and 257 K (outside)....

A heat pump operates between reservoirs at 299 K (inside the house) and 257 K (outside). It is not a reversible heat pump; it only pumps 74% of the maximum possible heat into the house. How much work must be done to “pump” 6500 J of heat energy into the house?

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