1. The problem statement, all variables and given/known data The entire problem is in the attachment. 2. Relevant equations F = k*(|q||q0|)/(r^2) 3. The attempt at a solution F = 8.99e9(.450uC*.450uC)/(3cm^2) = 6.068e8 This problem has me completely lost and Im turning to you guys as my last resort. I solved for F and have no idea what to do after this. Any sort of insight would be appreciated and I can provide formulas upon request. Thank you.