particles 1 and 2 of charge q1 = q2 = 3.20 * 10^-19 C are on a y
axis at distance d = 0.17 m from the origin. Particle 2 is located
below x axis at -.17m and particle 1 is above. Particle 3 of charge
q3 = 6.40 * 10^-19 C is moved gradually along the x axis from x = 0
to x = 5.0 m. At what values of x will the magnitude of the
electrostatic force on the third particle from the other two
particles be (a) minimum and (b) maximum? What are the (c) minimum
and (d) maximum magnitudes?