Two 1.0 kg masses are 4.0 m apart on a frictionless table. each has 1.0μc of charge. part a what is the magnitude of the electric force on one of the masses? what is the initial acceleration of each mass if they are released and allowed to move?

The force between two charged particles can be determined using the formula
F = k Q1 Q2 / d²

Using the given values
F = 9 x 10^9 (1.0 x 10^-9)(1.0 x 10^-9) / 4²
F = 5.625 x 10^-10 N

The acceleration is
ma = F
1 (a) = 5.625 x 10^-10
a = 5.625 x 10^-10 m/s²