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Electrical energy and potential energy

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A portable CD player uses a current of 7.2 mA at a potential difference of 3.5 V.
Suppose the player has a mass of 0.47 kg. How long could the player operate (in minutes) on the energy required to lift it through a height of 1 m?

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Solution Summary

This solution looks at the relation between electrical energy and potential energy of a CD player.

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The energy required to lift the player through a height of 1 m = m * ...

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