A system does 200 J of work and at the same time absorbs 150

Question

A system does 200 J of work and at the same time absorbs 150 J of heat. The magnitude of the change in internal energy is ____________ J. (Nearest integer)

DivineJEE · Accepted Answer

w = -200 J, q = +150 : DeltaU = q + wDeltaU = 150 - 200 = -50 J Magnitude = 50 J = |DeltaU |

Explanation

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