1. The problem statement, all variables and given/known data Four charges are located at the corners of a square as shown below. Calculate the magnitude and direction of the net force on charge -3Q and charge 4Q. (sorry don't have picture, but it is of a square with corners -Q, 2Q, -3Q, and 4Q clockwise). 2. Relevant equations F= K(q1)(q2)/r^2 K= 8.99x10^9 3. The attempt at a solution I don't understand how to start with the information I've been given, it seems like its not enough.