Two, hollow, spherical conductors, are placed concentrically in free space. The inner sphere has radius R; and the outer Ro. The inner sphere has a charge Q, the outer sphere has a charge -Q, see Figure 3. R. + E E Figure 3 (a) Use Gauss's law to show that, between the two spheres, the electric field is E 47tEgr2 (1) and zero everywhere else. State all assumptions that you make.

Two, hollow, spherical conductors, are placed concentrically in free space. The inner sphere has radius R; and the outer Ro. The inner sphere has a charge Q, the outer sphere has a charge -Q, see Figure 3. R. + E E Figure 3 (a) Use Gauss's law to show that, between the two spheres, the electric field is E 47tEgr2 (1) and zero everywhere else. State all assumptions that you make.