The escape velocity for a planet is \( 20 \mathrm{~km} / \mathrm{s} \). Find the potential energ...

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The escape velocity for a planet is \( 20 \mathrm{~km} / \mathrm{s} \). Find the potential energy of a particle of mass \( 1 \mathrm{mg} \) on the surface of this planet.
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