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A parallel-plate capacitor?

A parallel-plate capacitor is made by placing polyethylene (kappa 2.3) between two sheets of aluminum foilThe area of each sheet of aluminum foil is 400 cm2, and the thickness of the polyethylene is 0.5 mmThe permittivity of free space is 8.85 × 10?12 C2/N · m2Find the capacitanceAnswer in units of nF.

Answer:

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k2.3 A400x10^-4 d0.5x10^-3 E08.85x 10^-12 CkE0A/d2.3x8.85x 10^-12x400x10^-4/0.5x10^-3 162.84x10^-11F1.6284x10^-9F1.6284nF

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