A Refrigerator Keeps Food in the Freezer Portion at −15°C

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 into the kitchen?

A) 950 W
B) 910 W
C) 630 W
D) 1,120 W

Correct Answer:

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