73. A ball with a radius of 2 cm is charged with a bulk density of 6 ∙ 10−8 C / cm3. Determine the intensity E and the field potential φ at a distance of 3 cm from the surface of the ball. Build a graph of the dependence of E (r) and φ (r), where the distance r is measured from the center of the ball.

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