Multiple Choice
By which of the following means can the internal energy of a substance be increased?
1) Cooling the substance
2) Performing work on the substance
3) Heating the substance
A) 2 and 3 only
B) 1 and 2 only
C) 2 only
D) 1, 2, and 3
Correct Answer:

Verified
Correct Answer:
Verified
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