1. The problem statement, all variables and given/known data I'm given a chart of Force vs Seperation with the following values: SEPARATION (m) 0.1 0.2 0.3 0.4 0.5 0.6 FORCE (N) 0.79 0.48 0.20 0.05 0.022 Where FORCE is the y-axis, and 0.1 corresponds with 0.79. I am not given any other values. All I know is that these are measures of distance and forces between two identical, equally charged spheres. Now I am tol to manipulate the data until I get a set of values that will form a straight line when graphed. 2. Relevant equations E = kq1q2/r^2 3. The attempt at a solution I know that Coulomb's law works out to k x q1 x q2 x 1/r^2 So if I were to multiply by r instead of 1/r^2 I should get a linear graph... Problem is, I don't have any values for either charge. I'm totally stumped. Can someone point me in the right direction?