hi everybody, 1. The problem statement, all variables and given/known data A +2 C charge is 20cm to the right of a -3 charge. What is the electric field on the line excatly halfway between the two charges? 2. Relevant equations E = kq/d^2 3. The attempt at a solution force of attraction; therefore vector of -3 charge would be to the right and vector of 2 charge would be to the left (negative). E= k(3)/(0.1^2) + k(-2)/(0.1^2) = 9 x 10^11 The handout answer is 4.5 x 10^12 N/C (left). Am I using the wrong equation?