1. The problem statement, all variables and given/known data The electric field at a location C points north, and the magnitude is 1*10^6 N/C. Where should you place a proton and an electron, at equal distances from C, to produce this field? Give a numerical answer and a direction for each particle (North, South, East or West). 2. Relevant equations E=k q/r^2 E=k q1 q2/r^2 3. The attempt at a solution Because the distances are equal, I set two sets of the equation equal to each other (one for the electron and one for the proton) k q1 q2/r^2=k q1 q2/r^2 q2/r^2=q2/r^2 1.6e-19/r^2=-1.6e-19/r^2 Taking square root of each side √1.6e-19/r=√-1.6e-19/r r√1.6e-19=r√-1.6e-19 Here I realised that this wasn't going to work, because I would be dividing r by r and also taking the square root of a negative number. I thought the best way to do this would be by setting the two equations equal to each other as the distance must be the same, but the way I went about solving this problem didn't work.