Homework Help: physics

Posted by Freda on Thursday, February 11, 2010 at 2:52am.

A proton is released 2*10^-11 from the center of an immovable 6.4*10^-18 C charged sphere. What is the speed of this proton when it is 0.50mm from the center of the sphere?

physics - Damon, Thursday, February 11, 2010 at 6:44am
Kinetic energy = (1/2) m v^2

Change of potential energy = kinetic energy.

Do the other problem the same way.

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