What is the change in internal energy if 60 J of heat is released from a system and 30 J of work is done on the system? Use U = Q - W. \
Physics · Middle School · Wed Jan 13 2021
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Determine the change in internal energy if 60 J of heat is released from a system and 30 J of work is done on the system.
Use the formula U = Q - W
Solution:
In order to determine the change in internal energy, we simply needed to subtract the amount of heat by the work done.
U = Q - W
U = 60 J - 30 J
U = 30 J
Final answer:
The change in internal energy is 30 J