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11 July, 21:28

A system releases 20 J of heat into its surroundings while the surroundings

perform 80 J of work on the system. What is the change of energy of the

system? (Use AU=Q-W]

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Answers (1)
  1. 11 July, 22:02
    0
    The change of energy is 60J

    Explanation:

    We have a closed system, which receives 80 J of energy. It means this energy is entering the system. And also we have 20 J that is dissipating in the shape of heat.

    Therefore the amount remaining in the system will be 80 - 20 = 60 J
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