Three charges are arranged as shown in the figure below. Find the magnitude and

Question

Three charges are arranged as shown in the figure below. Find the magnitude and direction of the electrostatic force on the charge q = 4.89 nC at the origin. (Let r12 = 0.286 m.)

The strategy to use when calculating the force exerted by a set of several point charges is to find first the forces exerted by each of the point charges individually. The force exerted by the entire set of charges is the net force resulting from the forces exerted by the individual charges. The forces from the individual charges in this problem are shown in the diagram below.

r122

I need to know what q1 x q2 equals and overall what f12 equals

r122

I need to know what q1 x q2 equals and overall what f12 equals

Explanation / Answer

q1 x q2 = 4.89*10^-9*6*10^-9 = 29.34*10^-18

F12 = ke*q1*q2 / r^2

F12 = 8.99*10^9*4.89*10^-9*6*10^-9 / 0.286^2

F12 = 3.224688*10^-6 N

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