A small plastic ball of mass 6.27 x 10-3 kg and charge +0.145 JC 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 0.02248 m2. What is the magnitude of the charge on each plate? 30.0 + + + + + + Number Units C