Spherical shell of inner radius R1 = 1.78R and outer radius R2 = 4.61 R is filled uniformly with charge density p. A point charge Q = 4.6q is located at point A a distance 6.76R from the center of the sphere. What is the magnitude of the force acts on the sphere by the point charge . Express your answer in terms of qpR/co using two decimal places. R 2 FOOD O R1