本题目来源于试卷: 1st Law of Thermal Dynamics,类别为 美国物理杯赛(Physics Bowl)
[单选题]
06.26: In the Pressure versus mprwgw(92)a q (z+ f zqumzcs8 n+9y-r Volume graph shown, in the pro ;0b1qp t u+ aytt44mg;eo2ej gcess of going from a to b 60 J of heat are added, and in the process of going from b to d 20 J of heat are added. In the process of going a to c to d, what is the total heat ad 2 g0;;4bqmt +oyjget4t1pea uded?

A. 80 J
B. 65 J
C. 60 J
D. 56 J
E. 47 J
参考答案: B
本题详细解析:
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