Задача 30086.

In the corners of a square with sides l there are two positive and two negative charges, the absolute values \u200b\u200bare equal to q. What kind of work should be committed to the charge + q to move from the center of the square to the point M, which is in the middle of any of the parties?

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

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