Two point charges are fixed on the y axis: a negative point charge q1 = -31 μC at y1 = +0.16 m and a positive point charge q2 at y2 = +0.32 m. A third point charge q = +9.0 μC is fixed at the origin. The net electrostatic force exerted on the charge q by the other two charges has a magnitude of 28 N and points in the +y direction. Determine the magnitude of q2.
Here, we know
F = kq1q2 / r2
so,
28 = 9e9*31e-6*9e-6 / 0.162 + 9e9*q2*9e-6 / 0.322
28 = 98.09 + 791015.625*q2
q2 = 8.86e-5 C
q2 = 88.6 uC
Two point charges are fixed on the y axis: a negative point charge q1 = -31...
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