1. The problem statement, all variables and given/known data q1 = 4 mC at the origin q2 = 2 mC at x=1.0m y=0.0m q3 = 1 mC at x=1.0m y= 1.0m q4 = 3 mC at x=0.0m y= 1.0m What is the net force on q2? Give magnitude and direction of the force. 2. Relevant equations E = kq/r^2 E = F/q 3. The attempt at a solution Ok after plotting the locations of all 4 charges on a graph, you see that it makes up a square. So to find each electric field, i plugged in k, which is 9*10^9, r, which for q1 would be 1 because that's the distance charge q1 is from q2. By doing this for all 4 charges, i get the magnitude of each electric field. The problem is, I'm not sure what to input for q2 as the distance is 0 (r=0) and you can't divide by 0. I'm also sure unsure whether or not charge q2's electric field has any effect on the other charges. What I planned to do to solve the problem was to find each electric field and plug it into E = F/q to find the force and add them up to find net force, but I'm stuck on the steps mentioned. Any help would be appreciated, thanks.