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kotykmax [81]
3 years ago
9

What is the change in internal energy if 60 J of heat are released from a

Physics
1 answer:
lana [24]3 years ago
7 0

Answer:

60 J of heat are released from the system: Q=-60 J

20 J of work is done on the system: W=-20 J

∆U=Q-W

∆U=-60-(-20)

∆U=-40 J

Explanation:

If the heat is released from the system, Q should be negative.

If the heat is gained by the system, Q should be positive.

If the work is done on the system, W should be negative.

If the work is done by the system, W should be positive.

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