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An electron (charge -e = -1.60 x 10^-19 C) is at rest at a distance 1.00 x 10^-10 m from the center of a nucleus of lead (charge +82e = +1.31 x 10^-17 C). You may treat both objects as point charges. How much work would you have to do to move the electron to a distance 5.00 x 10^-10 m from the center of the lead nucleus?

If you release the electron from the position in A, what will be its kinetic energy when it is a distance 8.00 x 10^-12 m from the center of the lead nucleus? (You can assume that the lead nucleus remains at rest, since it is much more massive than the electron.)