1. The problem statement, all variables and given/known data Figure 23-30 shows two nonconducting spherical shells fixed in place. Shell 1 has uniform surface charge density +6.0 µC/m2 on its outer surface and radius 3.0 cm. Shell 2 has uniform surface charge density -3.8 µC/m2 on its outer surface and radius 2.0 cm. The shell centers are separated by L = 14 cm. What are the magnitude and direction of the net electric field at x = 2.0 cm? 2. Relevant equations 3. The attempt at a solution I tried to just ignore the first sphere and use E = q / (4 pi epsilon0 r^2), taking q to be the full charge of the second sphere acting as if it were centered at the sphere's center. But then I realized that the electric field from the first sphere will affect the field on the point because it'll do a little canceling out of the field from the second sphere. I do believe I should create a Gaussian surface somewhere, but I'm not sure where.