Unformatted text preview: ( µ C to C, cm to m), we obtain ∆ U = – 24 J. (b) Now we consider the difference in U where initially r 23 = a and r 13 = a , and finally r 23 is again equal to a and r 13 is also again equal to a (and of course, r 12 doesn’t change in this case). Thus, we obtain ∆ U = 0....
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 Spring '10
 Rebello,NobelS
 Electric Potential, Energy, Potential Energy, Work, Electric potential energy, r13

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