5 J of heat is taken out of the system and 20 J of work is done on the – McqOptions

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

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