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3 years ago

What is the change in internal energy if 70 J of heat is added to a system and

Physics

1 answer:

ValentinkaMS [17]3 years ago

4 0

Answer:

A. 40 J

Explanation:

Given;

heat added to the system, Q = 70 J

work done by the system, W = 30 J

The change in the internal energy of the system is calculated using the first law of thermodynamic as shown below;

ΔU = Q - W

ΔU = 70 J - 30 J

ΔU = 40 J

Therefore, the change in the internal energy of the system is 40J

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