where q3is now understood to be in µC. Thus, we obtain q3= –45 C. 63. We are looking for a charge qwhich, when placed at the origin, experiences GFnet=0, where GGGGFFFFnet=++123. The magnitude of these individual forces are given by Coulomb’s law, Eq. 21-1, and without loss of generality we assume q> 0. The charges q1(+6 C), q2(–4 C), and q3(unknown), are located on the +
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This note was uploaded on 06/03/2011 for the course PHY 2049 taught by Professor Any during the Spring '08 term at University of Florida.