1. The problem statement, all variables and given/known data Two thin rods of length L lie on the x axis. One of them has a charge of -Q uniformly distributed along its length and is positioned between x = -L and x = 0. The other one has a charge of +Q uniformly distributed along its length and is positioned between x = 0 and x = L. Find the electric field produced by the two rods (magnitude and direction) at a point O located on the y axis at y = h. 2. Relevant equations I would imagine the relevant equation is E=kq/r^2. I would kind of like to solve this without calculus, since i don't understand that. 3. The attempt at a solution I think the vertical components cancel out. After that, I really have no idea what to do. Maybe you plug in the distance into the above formula. I am really confused with this problem.