4. Three point-like charges are placed at the corners of a square as shown in the figure, 30.0 cm on each side. Find the work done by the electric field force when the charge q2 is moved to infinity. Let q₁ = -3.20 µC, q2 = +3.80 µC, 93 = +3.70 µC. J 9₂0 a 093 coni's cello coti

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