1. The problem statement, all variables and given/known data A particle of charge Q is fixed at the origin of an xy coordinate system. At t = 0 a particle (m = 0.776 g, q = 5.04 µC is located on the x axis at x = 18.7 cm, moving with a speed of 39.8 m/s in the positive y direction. For what value of Q (in μC) will the moving particle execute circular motion? (Neglect the gravitational force on the particle.) 2. Relevant equations F=mv^2/r- centripetal force F=k*q1*Q/r^2 3. The attempt at a solution i'm thinking of starting by setting the two forces together and find the other Q. Just making sure if its the correct way to find it. If its not can someone outline the steps i need to follow? thanks.