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Posted by on Saturday, October 8, 2011 at 12:26am.

A proton moves from a location where V = 70 V to a spot where V = -31 V.
(a) What is the change in the proton's kinetic energy?
J

(b) If we replace the proton with an electron, what is the change in kinetic energy?

  • physics - , Saturday, October 8, 2011 at 4:59am

    (a) KE increases by e*(delta V) ,
    where delta V = 101 Volts

    (b) KE decreases by the same amount as in (a). The electron must possess initial kinetic energy of at least 101*e to reach the -31 V location.

  • physics - , Saturday, October 8, 2011 at 1:27pm

    this should be in Joules.....

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