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A parallel plate air capacitor with a capacitance of C (0.02 F) is connected to a...

A parallel plate air capacitor with a capacitance of C (0.02 F) is connected to a 12V battery and charged. The capacitor is then disconnected from the battery and a dielectric with a dielectric constant of k (3.2) is inserted between the plates. How much energy will be stored in the capacitor after inserting the dielectric (6 points)? please explain step by step

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