1. The problem statement, all variables and given/known data In the figure below, a right triangle, determine the magnitudes of the a. Net e-field at p (assume a proton is placed at p) b. Net electrostatic force at P c. Net electrostatic potential at P let q = 1.70 x 10^-8, R = 78cm and P is halfway between Q1 and Q3 Red dot is P A^2 + B^2 = C^2 C = Sqrt(78^2+78^2)= 78sqrt(2) 2. Relevant equations F= (K|q1q2|)/R^2 E= (k|q|)/ R^2 PE = (kq1q2)/R 3. The attempt at a solution I just had a question about this problem, Since a proton is at the center, would Q1 and Q3 just cancel out since there are repelling one another and are the same charge? If that is true would i just solve everything for the two point charges, proton and Q2 since i know what R would be between the two?