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Energy cannot be created or destroyed.
∆U = Q –/+ L
When is L is positive and when is L is negative?
L performed by the system: POSITIVE
L performed on the system: NEGATIVE
Q is given to the system: POSITIVE
Q removed from the system: NEGATIVE
∆U = Q + W
W performed on the system: POSITIVE
W performed by the system: NEGATIVE
Q is given to the system: POSITIVE
Q removed from the system: NEGATIVE
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Topic starter
Posted : 22/10/2019 4:04 pm