Practice question

MCQ

Question

A system undergoes a process where 500 J of heat is released, and 300 J of work is done by the system. What is the change in internal energy (Δ U)?

Options

Choose one · Correct answer highlighted

-800 J Correct 800 J -200 J 200 J

Explanation

Δ U = q + w. Here, q = -500 J (heat released), w = -300 J (work done by system), so Δ U = -500 - 300 = -800 J.

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