31. On the extension of the axis of a thin straight bar, uniformly charged with linear charge density τ = 15 nC / cm at distance a = 40 cm from the end of the rod is a point charge Q1 = 10 SCLC. The other end of the rod goes to infinity. Determine the force acting on the charge Q1.
Detailed solution. Decorated in Microsoft Word 2003. (Target decided to use formula editor)
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