A small plastic ball of mass 8.40×10−3 kg and charge +0.205 μC is suspended from an insulating thread and hangs between the plates of a capacitor (see the drawing). 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 0.01795 m2. What is the magnitude of the charge on each plate? Number Units
