Two charged particles are fixed to an x axis : Particle 1 of charge q_(1) = 2.1 xx 10^(-8) C is at position x = 20 cm and particle 2 of charge q_(2) = -4.00 q_(1) is at position x = 70 cm. (a) At what coordinate on the axis (other than at infinity) is the net electric field produced by the two particles equal to zero ? (b) What is the zero-field coordinate if the particles are interchanged ?

Two charged particles are fixed to an x axis : Particle 1 of charge q_

1.	Two charged particles are fixed to an x axis : Particle 1 of charge q_(1) = 2.1 xx 10^(-8) C is at position x = 20 cm and particle 2 of charge q_(2) = -4.00 q_(1) is at position x = 70 cm. (a) At what coordinate on the axis (other than at infinity) is the net electric field produced by the two particles equal to zero ? (b) What is the zero-field coordinate if the particles are interchanged ?
Answer» SOLUTION :(a) -30 CM, (B) 120 m

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