An Refrigerator Keeps Food in the Freezer Portion at -15 $^{\circ}$

An refrigerator keeps food in the freezer portion at -15 $^{\circ}$ C and dumps excess heat into the kitchen,whose temperature is 22 $^{\circ}$ C.If the refrigerator has half the coefficient of performance of an ideal reversible refrigerator,and if its motor can supply 250W of power,what is the rate of heat flow into the kitchen?

A) 950W
B) 910W
C) 625W
D) 150W

Correct Answer:

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