Задача 30663.

The electric field created by an infinite string of charged positively. Proton, moving from the yarn by the field strength along the line at a distance of 1 cm to 5 cm, has changed its speed from 1 to 10 mm / s. Determine the linear charge density of the thread.

Detailed solution shorthand terms, formulas, laws used in the decision, the withdrawal of the calculation formula and the response.

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