Physics

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The figure shows four electrical charges located at the corners of a rectangle. Like charges, you will recall, repel each other while opposite charges attract. Charge B exerts a repulsive force (directly away from B) on charge A of 4.2 . Charge C exerts an attractive force (directly toward C) on charge A of 8.4 . Finally, charge D exerts an attractive force of 2.8 on charge A.

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    There is no question here. There are also no units for the charges.

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