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A heat pump is used to keep a house warm at 22∘C. A) How much work...

A heat pump is used to keep a house warm at 22∘C.

A) How much work is required of the pump to deliver 3200 J of heat into the house if the outdoor temperature is 0∘C. Assume a COP of 3.0

B)

How much work is required of the pump to deliver 3200 J of heat into the house if the outdoor temperature is -15∘C? Assume a COP of 3.0 Express your answer to two significant figures and include the appropriate units.

C)How much work is required of the pump to deliver 3200 J of heat into the house if the outdoor temperature is 0∘C. Assume an ideal (Carnot) coefficient of performance COP = TH/(TH−TL).

D) How much work is required of the pump to deliver 3200 J of heat into the house if the outdoor temperature is -15∘C. Assume an ideal (Carnot) coefficient of performance COP = TH/(TH−TL).

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