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Three point charges are placed on the x-axis.A charge of +2.0 μC is placed at the origin,
-2.0 μC to the right at x = 50 cm,and +4.0 μC at the 100 cm mark.What are the magnitude and direction of the electrostatic force that acts on the charge at the origin? (k = 1/4πε0 =
8.99 × 109 N ∙ m2/C2)
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