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Describe a process in which energy changes forms at least twice. Are there any unwanted forms of energy that are produced during the energy transformations?
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Describe a process in which energy changes forms at least twice. Are there any unwanted forms of energy that are produced during the energy transformations?

User Giordanolima
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When child swings on the swings energy transfers from potential (on the top points) to the kinetic (on the bottom).
User Cort
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