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zarkam21:
What is the change in internal energy if 250 J of heat is added to a system and 80 J of work is done by the system? Show your work.
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Vocaloid:
U = Q - W remember the sign conventions for work/heat
Vocaloid:
if heat is being added is Q positive or negative?
zarkam21:
250-80=170
Vocaloid:
good
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