1. The problem statement, all variables and given/known data The problem should be attached, not sure how to do part b. 2. Relevant equations E=kQ/r^2 F=kQ1Q2/r^2 Enet=E1+E2+E3 3. The attempt at a solution I figured out a, but have no idea how to do b. I was thinking of summing up the electric field vectors at point p, but there are 3 variables for Enet.