13. (a) Eq. 21-1 gives ()( )2692212122220.0 10 C8.99 10 N m C1.60N.1.50mqqFkd−×==×⋅=(b) On the right, a force diagram is shown as well as our choice of yaxis (the dashed line). The yaxis is meant to bisect the line between q2and q3in order to make use of the symmetry in the problem (equilateral triangle of
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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.