A) 40 kJ
B) 50 kJ
C) -60 kJ
D) -50 kJ
Correct Answer: C
Solution :
[c] \[-20=\Delta U+50\Rightarrow \Delta U=-70.\] \[\text{From }2\to 1,\Delta U=70kJ.\] \[\text{Now }10=70+W\Rightarrow W=-60kJ.\]You need to login to perform this action.
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