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A refrigerator keeps food in the freezer portion at 15C and dumps excess heat into the kitchen, ...

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A refrigerator keeps food in the freezer portion at 15C and dumps excess heat into the kitchen, ...

A refrigerator keeps food in the freezer portion at −15°C and dumps excess heat into the kitchen, whose temperature is 22°C. If the refrigerator has half the coefficient of performance of an ideal reversible refrigerator, and if its motor consumes 250 W of power, what is the rate of heat flow out of the freezer portion of the refrigerator?

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340 W

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870 W

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1,100 W

▸

630 W

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College Physics

Edition: 5^th

Author: Giambattista

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