A sphere of radius R = 0.250 m and uniform charge density -151 nC/m' lies at the center of a spherical, conducting shell of inner and outer radii 3.50R and 4.00, respectively. If the Macmillan Learning conducting shell carries a total charge of Q = 40.5 nC, find the magnitude of the electric field at the given radial distances from the center of the charge distribution. T 0.310R: 439.84 N/C 3.95 R: 0 R N/C 3.50R 4.00R 0 1.10R: N/C Incorrect 7519.97 5.30R: N/C