14. A uniformly charged metal sphere of radius R = 10 cm with a total charge of Q = 4 nC is located in a vacuum. Determine the intensity E of the electrostatic field: 1) at a distance r1 = 6 cm from the center of the sphere; 2) on the surface of the sphere; 3) at a distance of r2 = 20 cm from the center of the sphere.

Detailed solution. Decorated in Microsoft Word 2003. (Target decided to use formula editor)