Question

Two spherical beads (charged equally, with each one weighing 3.10 g) are put 6.70 cm away from each other. If they are let go and begin to accelerate at 118 m/s2, what would be the magnitude of the charge on each bead?

Answer 1

Are they each accelerating at 118 m/s^2 in the direction away from the other or are they each accelerating at 118/2 = 59 m/s^2 so that the rate of change of distance between them is changing at 118 m/s^2

Once you have that F = m a
assuming a = 118
k Q1Q2/x^2 = .00310 (118)
k = 9*10^9
9*10^9 Q^2 = .00310 * 118 * (0.067)^2