1. The problem statement, all variables and given/known data Two particles each have a mass of 5.9e-3 kg. One has a charge of +5.0e-6 C, and the other has a charge of -5.0e-6 C. They are initially held at rest at a distance of 0.70 m apart. Both are then released and accelerate toward each other. How fast is each particle moving when the separation between them is one-half its initial value? 2. Relevant equations [tex] F = kq1q2/r^2 [/tex] [tex] E = F/q [/tex] [tex] V=Ed [/tex] [tex] CV = q [/tex] [tex] Energy = 1/2CV^2 [/tex] [tex] KE = 1/2mv^2 [/tex] 3. The attempt at a solution F = kq1q2/r^2 F = (8.99e9)(5e-6)(5e-6)/.35^2 F = 1.83 N E = F/q E = 1.83/5e-6 E = 366,000 N/C V = Ed V = (366000)(.35) V = 128,100 V q = CV (5e-6) = (128,100)C C = 3.90e-11 Energy = 1/2CV^2 Energy = .5(3.9e-11)(128100)^2 Energy = .32 J KE = 1/2mv^2 .32 = 1/2(5.9e-3)v^2 v = 10.4 m/s Verification on this would be very greatly appreciated.