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If we know the total energy in a system is 30 j, and we know the PE is 20 j, what is the KE?
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If we know the total energy in a system is 30 j, and we know the PE is 20 j, what is the KE?

User Nimzz
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30j-20j= 10j

The kinetic energy is 10 joules

The total energy is equivalent to PE+KE. Therefore the answer is 10 joules.
User Runaros
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