I've been working on this problem for a while but i am getting confused on vector directions. Four point charges are arranged in a square with sides of 0.38m. Find the magnitude and direction of the force at each corner of the square. Point 1=3nC Point 2= 19nC Point 3= -6nC Point 4= -17nC (this is what the square looks like) I've been setting up the forces at each point using F=k q1*q2/ r^2 but im not sure i have the arrows in the right directions and how to calculate the force coming in from the diagonal! PLEASE HELP!