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A beam of electrons with with velocity 4.67x106 m/s (per electron) is directed towards a solid...

A beam of electrons with with velocity 4.67x106 m/s (per electron) is directed towards a solid copper sphere of radius 1.25cm. Note: Electrons have a mass of 9.11x10-31 kg.

a) Determine the maximum charge that will accumulate on the sphere before the electrons no longer hit the sphere (are repelled by it).

b) Determine the voltage on the sphere when it has the charge such that electrons will no longer strike it (are deflected by the charge on the sphere).

c) Determine the maximum number of electrons on the sphere.

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