Charge 1 (+Q) is at the point (0,a). Charge 2 (+2Q) is at the point (0, -2a).
(a) Find the electric force (magnitudete and direction) felt by charge 1 due to charge 2.
(b) Find the electric field (magnitude and direction) at the origin created by both charges (in other words, find the net electric force).
(c) Is there a point on the x-axis where the total electric field is zero? If so, where? If not, explain briefly.
(d) If a small negative charge, -q of mass m were placed at the origin, determine its initial acceleration(magnitude and direction).