1. The problem statement, all variables and given/known data Determine the magnitude of the electric field at a point midway between a -8.1μC and a 8.9μC charge 8.0cm apart. Assume no other charges are nearby. Determine the direction. (Answer in two sig figs.) 2. Relevant equations E=k/r^2(Q1+Q2) 3. The attempt at a solution I drew this: -8.1---------p----------8.9 This is what I think I'm supposed to do. The field due to -8.1 charge points toward it. The field due to 8.9 points away. So they are both pointing towards the negative charge? so E=k/.08^2(8.1e-6+8.9e-6)=2.4e7 N/C but this is incorrect. Please explain why! Thanks.