1. The problem statement, all variables and given/known data Two identical point charges, q1 = +2.5 x 10-6 C and q2 = +2.5 x 10-6 C, are placed as shown in the diagram below. Point P is a distance 0.05 m from q1 and 0.12 m from q2, such that the angle at P is 90 degrees. Calculate the magnitude of the Electric field E at point P. 2. Relevant equations Not sure which of these rules would apply. Also I suck at vectors F = k x q1 x q2 / r^2 E = k x Q / r^2 3. The attempt at a solution So I have created the diagram and I believe I have to use the second formula twice, along with some trigonometry, but I'm not sure. E1 = k x Q1 / r^2 E1 = k x +2.5 x 10^-6 / 0.05^2 E1 = 9 x 10^6 E2 = k x Q2 / r^2 E2 = k x +2.5 x 10^-6 / 0.12^2 E2 = 1.563 x 10^6 I Can't do vectors at all. Please help.