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

question 62

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 3C.

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

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