Three charges lie along a circle of radius 20.0cm. q1= -2.90nC is at 30 degrees, q2 = -2.90nC is at 150 degrees, and q3 = -1.60nC...?

Three charges lie along a circle of radius 20.0cm. q1= -2.90nC is at 30 degrees, q2 = -2.90nC is at 150 degrees, and q3 = -1.60nC is at 270 degrees. (a) Find the electric field (magnitude and direction) at the center of the circle. (b) What would be the force on an electron placed at the center (direction and... show more Three charges lie along a circle of radius 20.0cm. q1= -2.90nC is at 30 degrees, q2 = -2.90nC is at 150 degrees, and q3 = -1.60nC is at 270 degrees.

(a) Find the electric field (magnitude and direction) at the center of the circle.

(b) What would be the force on an electron placed at the center (direction and magnitude)?
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