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QUESTION
two particles are fixed to an x-axis: particle 1 of charge q1 = 2.1 X10^-8 C at 20 cm and particle 2 of charge q2 = -4.00q1 at x = 70 cm.
two particles are fixed to an x-axis: particle 1 of charge q1 = 2.1 X10^-8 C at 20 cm and particle 2 of charge q2 = -4.00q1 at x = 70 cm. At what coordinate on the axis is the net electric field produced by the particles equal to zero?
