1. How far apart must two point charges of 75.0 nC be to have a force of 1.00 N between them? 2. Relevant equations F = k Q1Q2/r2 3. 1N = 9e10 * 75e-10 squared/r squared r2= 9e10 * 75e-10 squared/1N r2= 9*75*75e-10 r2= 5.0625e-7 r= square root of 5.0625 * square root of e-7 if this is right so far then i just have an algebra issue, what is the square root of e-7? can it be e-3.5?, if so, what is the value of e-3.5?