1. The problem statement, all variables and given/known data In a vacuum, two particles have charges of q1 and q2, where q1 = +3.5 µC. They are separated by a distance of 0.25 m, and particle 1 experiences an attractive force of 2.3 N. What is q2 (magnitude and sign)? 2. Relevant equations 3. The attempt at a solution not sure why this wouldn't work 2.3 N = (8.99 x 10^9 * Q2)/ .25^2 should that work? and would the sign be + or -? thanks.