Three particles are fixed on an x axis. Particle 1 of charge q is at x=-a and particle 2 of charge q2 is at x = +a. If their net electrostatic force on particle 3 of charge Q is to be zero, what must be the ratio q/92 when particle 3 is at (a) x +0.257a and (b) x=+1.53a? (a) Number 2.87 Units No units (b) Number i 22.8 Units No units