1. In classroom we have calculated the electric field of a homogeneously charged circle on its...

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1. In classroom we have calculated the electric field of a homogeneously charged circle on its axis, and found: E(z) = kQzk (x + R)3/2 Q> 0, R, k been the charge on the circle, its radius, and unit vector, respec- tively. z is the distance from the center of the circle. Consider another charge 90 put on the position z on the axis of the circle. a) Find the force F(z) acting on q. Is this force attractive or repulsive? Explain. b) Assuming 1. In classroom we have calculated the electric field of a homogeneously charged circle on its axis, and found: E(z) = kQzk (x + R)3/2 Q> 0, R, k been the charge on the circle, its radius, and unit vector, respec- tively. z is the distance from the center of the circle. Consider another charge 90 put on the position z on the axis of the circle. a) Find the force F(z) acting on q. Is this force attractive or repulsive? Explain. b) Assuming