A sphere of radius R = 0.265 m and uniform charge density −151 nC/m3 lies at the center of a spherical, conducting shell of inner and outer radii 3.50R and 4.00R, respectively. If the conducting shell carries a total charge of Q = −38.1 nC, find the magnitude of the electric field at the given radial distances from the center of the charge distribution.6.10R : N/C