本题目来源于试卷: Efficiency, coefficient of performance and Carnot Cycle，类别为 美国物理杯赛(Physics Bowl)
[单选题]
06.44: A refrigerator must operate when the outside environmut1ea xr(7 4jfent-*mlww i( k:) duusv6p is at $22^{\circ}C$ to maintain an environment at $2^{\circ}C$ inside the refrigerator. During one cycle, the refrigerator expels 1200 J of energy to the outside environment while 400 J of work were done. What is the coefficient of performance of this refrigerator?
A. 2.00
B. 3.00
C. 10.00
D. 13.75
E. 14.75
参考答案: A
本题详细解析:
暂无
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