Лаг1989 задача №12.32

Positive charges q₁ = 3.7 · 10⁻⁵C and q₂ = 6.2 · 10⁻⁵C are in vacuum at a distance of r₁ = 2.7m from each other. Find work A to be done to bring the charges closer to a distance r₂ = 0.25 cm.

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