robert7248 robert7248

19-12-2019
Physics

contestada

what is the change in internal energy if 70 J of heat is added to a system and the system does 30 j of work on the surroundings?

A. 40 J
B. 100 J
C. -40 J
D. -100 J

Respuesta :

Аноним Аноним

19-12-2019

Answer:

I think the answer is A. 40 J

Explanation:

Hope it helps

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