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A capacitor consists of two 7.0-cm-diameter circular plates separated by 1.0 mm. The plates are charged...

A capacitor consists of two 7.0-cm-diameter circular plates separated by 1.0 mm. The plates are charged to 160 V , then the battery is removed. Part A) How much energy is stored in the capacitor? Uc= _____ J

Part B) How much work must be done to pull the plates apart to where the distance between them is 2.0 mm? W=______J

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