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25-10-2022
Physics

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1000 joules of energy are put into a pulley system, and 400 joules come out. What does the Law of Conservation of Energy imply about the lost
energy? (1 point)
O The lost energy cannot be recovered.
O The lost energy is not truly lost, but it changed into a different form.
O The lost energy is caused by friction.
O The pulley system could be improved to conserve some of the lost energy.

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