1.

In a closed system, change in internal energy is 10 J and heat transferred to it is 10 J what is the work done by the system?(a) 0(b) 10 J(c) -20 J(d) 20 J

Answer» Right answer is (a) 0

For explanation I would say: ∆E = W + Q, => W = 10 – 10 = 0.


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