38. A point charge q1 = 20 nC placed in the center of the spherical surface of the nonconductive radius R = 15 cm, evenly distributed charge q2 = -20 nC. Determine the tension E at the points A and B are remote from the center of the sphere on the distance rA = 20 cm, and RB = 10 cm.
Detailed solution. Decorated in Microsoft Word 2003. (Target decided to use formula editor)
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