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An initially uncharged air-filled capacitor is connected to a 5.15 V charging source. As a result,...

An initially uncharged air-filled capacitor is connected to a 5.15 V charging source. As a result, the capacitor acquires 7.19×10^−5C of charge. Then, while the capacitor remains connected to the charging source, a sheet of dielectric material is inserted between its plates, completely filling the space. The dielectric constant ? of this substance is 7.39.

Find the voltage ? across the capacitor and the charge ?f stored by it after the dielectric is inserted and the circuit has returned to a steady state.

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