The flash of a digital camera totally consumes the energy of an arrray of identical 7 F capicitors when a picture is taken. The capicitors are arranged in parallel and connected to a 2.7 V battery. How much energy does each capacitor in the array store if the camera's flash delivers 7.4 kW of light power (over 1.5 ms)for each flash? How many capicitors are in the array? What's the cost of manufacturing the capicitor array if a pack of 100 capacitors costs $0.45?