Two negative and two positive point charges (magnitude Q = 5.30 mC ) are placed on opposite corners of a square as shown in the figure (a = 0.120 m ).
Determine the magnitude of the force on each charge.
Determine the direction of the force on each charge in degrees counterclockwise from the +x axis.
Homework Answers
Force on each of the charges = - kQ^2/2a^2 + kQ^2/a^2 * sqrt2
= - 9e9*5.3e-3^2/[2*0.12^2] + 9e9*5.3e-3^2/[0.12^2] * sqrt2
= 16050161 N
direction of each charge is towards center
direction of 1 = 360 - 45 = 315 degree
direction of 2 = 180+45 = 225 degree
direction of 3 = 90+ 45 = 135 degree
direction of 4 = 45 degree
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