In Figure 23-50, a solid sphere of radius a = 3.00 cm is concentric with a spherical conducting shell of inner radius b = 2.00a and outer radius c = 2.40a. The sphere has a net uniform charge q1 = +6.36 fC; the shell has a net charge q2 = –q1. What is the magnitude (in N/C) of the electric field at radial distances (a)r = 0 cm, (b)r = a/2.00, (c)r = a, (d)r = 1.50a, (e)r = 2.30a, and (f)r = 3.50a? What is the net charge (in C) on the (g) inner and (h) outer surface of the shell?