1. The problem statement, all variables and given/known data Three positive point charges are arranged in a triangular pattern in a plane, as shown below. The Coulomb constant is 8.98755 × 109 N · m2/C2. Find the magnitude of the net electric force on the 2 nC charge. Answer in units of N. 2. Relevant equations Fe = (kq1q2) / (d2) 3. The attempt at a solution I was looking at this thread with the exact same problem and I followed the directions. However, I don't know what I am doing wrong. https://www.physicsforums.com/showthread.php?p=1892198" My diagram: (it's like the picture given in the thread I looked at but just with different numbers) 3nC (+) | 2m ||---2m---| -------------(+) 2nC | 2m | (+) 6nC What I tried to do: ((8.9875e-9)(2e-9)(3e-9))/((sqroot(8))2) = 6.740625e-9 ((8.9875e-9)(2e-9)(6e-9))/((sqroot(8))2) = 1.348125e-8 cos(45)6.740625e-9 + sin(45)6.740625e-9 = 9.53268329e-9 -cos(45)1.348125e-8 + sin(45)1.348125e-8 = 0 After that I am confused.