Two identical positive charges exert a repulsive force of 6.4•10^-9 N when separated by a distance of 3.8•10^-10 m. Calculate the charge of each.

Question

This requires coulumbs law.

Please show work.

Answer 1

F = kq²/d² ⇒

q = √(Fd²/k)

q = d √(F/k)

d = 3.8 x 10^-10 m

F = 6.4 x 10^-9 N

Look up k in your physics book in appropriate units, and plug in the numbers. You should get q in coulombs.