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Four point charges, each of magnitude 7.76e-6 C are placed at the corners of a square 39.6 cm on a side. If three of the charges are positive and one is negative, find th emagnitude ofthe force experienced by the negative charge. Answer in units of N.
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Just compute the coloumbic force between each of the positive of particles and the negative one, being careful to note direction, and sum them.
coulombs law, yo! F=k(qxq)/r^2
use superposition to find the total force from all charges.
i dont know how to find direction of the charges when adding them.
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