1. The problem statement, all variables and given/known data Two point charges that are 0.600m apart experience a repulsive force of 0.400N. Sum of the two charges equal 1.00 x 10^-5 C. Find the values of the two charges 2. Relevant equations 3. The attempt at a solution My only reference on how to start on this problem is the section of my textbook on Electric Field lines, the textbook outlines the steps on how to get the strength of a field from its field lines, the formula given is completely unrelated to this problem given so i don't know how to start. I don't need an answer i'd just like some help on starting on it.