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A Refrigerator with a Coefficient of Performance of 3 \circ C)to 3

Question 31

Multiple Choice

A refrigerator with a coefficient of performance of 3.6 is used to cool 3 liters of mineral water from room temperature (20 \circ C) to 3 \circ C.If the refrigerator runs at 525 W,how long will it take the water to reach 3 \circ C? Recall that the heat capacity of water is 4.19 kJ/(kg K) and the density is 1 g/cm3.Assume the other contents of the refrigerator are already at 3C.


A) 43 s
B) 113 s
C) 407 s
D) 68 s
E) 26 s

Correct Answer:

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