What is the net force exerted by these two charges on a third charge q3 = 55.0 nC placed between q1and q2 at x3 = -1.130 m ?
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F = 1.95 = kq1q2/r^2
r^2 = 9x10^9*11.9*29.2x10^-12/1.95 = 1.604
r = 1.27 m
q = sqrt(F/K)*r = sqrt(5.5x10^-9/9x10^9) *2.0x10^-10 = 7.82x10^-10*2x10^-10
Ne = q/1.6x10-19 = 1
the first one needs a figure
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