42. At what angle does a small charged ball suspended on an inextensible filament deflect in vacuum if it is placed in a horizontal electric field with a strength of 1.7 ∙ 105 N / C? The charge of the ball is 5.1 nC, and its mass is 0.3 g.

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