F = k Q1Q2/r^2
here r = .115 so let (k/r^2) = c constant
Fnorth = -(3.17*3.96*10^-12)c
Feast = +(3.17*5.03*10^-12)c
magnitude = sqrt (Fx^2 + Fy ^2)
A charge of -3.17 μC is fixed at the center of a compass. Two additional charges are fixed on the circle of the compass (radius = 0.115 m). The charges on the circle are -3.96 μC at the position due north and +5.03 μC at the position due east. What is the magnitude of the net electrostatic force acting on the charge at the center?
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