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ist Law of Thermodynamics
Question 2 of 10
What is the change in internal energy if 20 J of heat is released from a system
and the system does 50 J of work on the surroundings?
Use AU = Q-W.
A. 30 J
B. 70 J
C. 30 J
D. -70J

Respuesta :

Answer:

Change in heat energy = -30 J

Explanation:

Given:

AU = Q-W

Heat energy Q = 20 J

Work done W = 50 J

Find:

Change in heat energy

Computation:

Change in heat energy = 20 J - 50 J

Change in heat energy = -30 J

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