1. The problem statement, all variables and given/known data A Particle of mass m and chargeq oves at high speed along the x axis. It is initially near x=-infinity and it ends up near x=+infinity. A second charge Q is fixed at the point x=0, y=-d. As the moving charge passes the stationary chrge, its x component o velocity does not change appreciably, but it acquires a small velocity in the y direction. Determine the angle through which the moving charge is deflected. 2. Relevant equations 3. The attempt at a solution We can't use impulse-momentum or energy equations here. I wrote F = kqQ/d^2 at the origin, dy = 1/2 * kqQ/d^2m * dt^2 where dt is x/v, but I don't know what I'm trying to do, or how I'm going to get there. There's also this thing about considering an infinitely long Gaussian cylinder, but I don't know how that'll fit here.