To determine the field strength generated by the charge is uniformly distributed over a thin, straight rod with a linear charge density 200 nC / m at a point on the extension of the axis of the rod at a distance of 20 cm from the proximal end. Rod length is 40 cm.

Detailed solution shorthand terms, formulas and laws used in the decision, the withdrawal of the calculation formula and the response.
If you have any questions to address, please. I'll try to help.