A solid insulating sphere of radius R has a charge of Q, (Q >
0) placed on it, uniformly distributed throughout its volume.
Surrounding the sphere is a spherical conducting shell with inner
radius 2R and outer radius 3R and has a charge of −2Q placed on it.
The sphere and the shell share the same center.
1A: Determine the magnitude of the electric field, E(r), where r
is the distance from the center of the sphere
1B: Determine the...