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Question: Two particles are fixed to an x axis: particle 1 of charge q1 = +1.00 10-8 C at x = 20 cm and particle 2 of charge q2 = -4.50q1 at x = 70 cm.
Part A: At what coordinate on the axis is the net electric field produced by the particles equal to zero?
Please give me an explanation for above question.
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