physics im stuck
posted by physdummy .
A small plastic ball of mass 6.10 10^-3 kg and charge +0.150 µC?
A small plastic ball of mass 6.10 10^-3 kg and charge +0.150 µC is suspended from an insulating thread and hangs between the plates of a capacitor. The ball is in equilibrium, with the thread making an angle of 30.0° with respect to the vertical. The area of each plate is 0.0150 m2. What is the magnitude of the charge on each plate?
i tried 9.20*10^-22 but not the answer