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Part A What potential difference is needed to give a helium nucleus (Q=2e) 50.0 keV of...

Part A

What potential difference is needed to give a helium nucleus (Q=2e) 50.0 keV of kinetic energy?   A point charge Q creates an electric potential of +125 V at a distance of 20 cm

Part B

A point charge Q creates an electric potential of +125 V at a distance of 20 cm .

What is Q?

Express your answer using two significant figures.

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