If work done on a system is 20 J and a heat of 15 J is taken out, what is the change in internal energy of the system? a) 5 J

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1.	If work done on a system is 20 J and a heat of 15 J is taken out, what is the change in internal energy of the system? a) 5 J
A.	10 J
B.	20 J
C.	30 J
Answer» B. 20 J

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