Question: Two particles are fixed to an x axis: particle 1 of charge -4.59 x 10-7 C is at the origin and particle 2 of charge +4.59 x 10-7 C is at x2 = 14.9 cm.
Part A: Midway between the particles, what is the magnitude of the net electric field?
I don't just need an answer, work and explanations/walkthrough would be much appreciated! Thanks.