Unformatted text preview: stands that are 1.75 m apart. The magnitude of the force between the two spheres is F. The spheres are touched together and then returned to their original insulated stands. What is the magnitude of the force between the spheres now? Answer: F’ = (1/3)F After the two spheres are touched together: the net charges +2q are shared by the two spheres; so each sphere gets +q. We have F’ = kq 2 /r 2 Before the two spheres are touched together: F = -3kq 2 /r 2 So the magnitude of F’ is 3 times smaller than F....
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This note was uploaded on 01/11/2011 for the course AP 1200 taught by Professor Michela.vanhove during the Spring '10 term at City University of Hong Kong.
- Spring '10