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GuDViN [60]
3 years ago
10

What is the change in internal energy if 60J of heat are released from a system and 20J of work is done on the system? Use U=Q-W

Physics
1 answer:
Ganezh [65]3 years ago
5 0
D because 60-20= 40J
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Two electric charges A and B were placed facing each other at a distance of separation "r". The common electrostatic force betwe
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Answer:

From the formula of force:

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when r is doubled, r becomes 2. find F:

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The answer is A. The outer lines change as it moves
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