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6. You have a parallel-plate capacitor made of two circular metal plates. The radius of each...

6. You have a parallel-plate capacitor made of two circular metal plates. The radius of each plate is 2 cm and they are separated by a distance of 1 mm. (a) What is the capacitance of this capacitor? (b) If you hook this capacitor up to a 9-V battery, how much energy will be stored in the capacitor? (c) If the 9-Volt battery has a total capacity of 610 milliAmp-hours, how many of the above capacitors could you charge up completely with this battery?

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