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Unformatted text preview: magnitudes is larger than the other, then, after contact, the balls will either both be positive or both be negative and so will repel . c) Each ball has a charge of +1 C. The force points away from the other charge and has a magnitude of 4 N. d) The charges that are flowing are the electrons, and so 3 C of electrons flow from ball 1 to ball 2. 7. a) Q = 4 "# mg tan $ d + 2 L sin ( ) = 3.01 C b) The Q 2 /4 part of the force remains the same [up to an overall minus sign] because the charge magnitudes are the same. The distance between the balls, however, is now smaller, which means that the force in the x-direction is larger in magnitude. This will pull the balls more to the sides and make a larger angle....
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This note was uploaded on 03/10/2012 for the course PHYSICS 8B taught by Professor Shapiro during the Spring '07 term at University of California, Berkeley.
- Spring '07