A non conducting solid sphere of radius 2.90 cm carries a uniformly distributed positive charge of 7.70×10-9 C.
1) Compute the magnitude of the electric field at a point 1.80 cm away from the center of the sphere.
2) Compute the magnitude of the electric field at a point 3.60 cm away from the center of the sphere.
3) Suppose that the sphere is conducting. Compute the magnitude of the electric field at a point 1.80 cm away from the center of the sphere.
4) Compute the magnitude of the electric field for the conducting sphere at a point 3.60 cm away from the center of the sphere.