Два заряда 1*10^-7 и 1*10^-8 Кл находятся на расстоянии

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Two charge 1 x 10 -7 and 1 x 10 -8 Kd are spaced 40 cm apart. What kind of work have to do to bring them closer to a distance of 15 cm?

Task 30209. Detailed solution shorthand terms, formulas, laws used in the decision, the withdrawal of the calculation formula and the response.

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