An engineer working in an electronics lab connects a parallel-plate capacitor to a battery, so that the potential difference between the plates is 225 V. Assume a plate separation of d = 1.54 cm and a plate area of A = 25.0 cm?. When the battery is removed, the capacitor is plunged into a container of distilled water. Assume distilled water is an insulator with a dielectric constant of 80.0. (a) Calculate the charge on the plates (in pC) before and after the capacitor is submerged. (Enter the magnitudes.) before pC after Q, = pC (b) Determine the capacitance (in F) and potential difference (in V) after immersion. C, = AV, = (c) Determine the change in energy (in nJ) of the capacitor. AU =

An engineer working in an electronics lab connects a parallel-plate capacitor to a battery, so that the potential difference between the plates is 225 V. Assume a plate separation of d = 1.54 cm and a plate area of A = 25.0 cm?. When the battery is removed, the capacitor is plunged into a container of distilled water. Assume distilled water is an insulator with a dielectric constant of 80.0. (a) Calculate the charge on the plates (in pC) before and after the capacitor is submerged. (Enter the magnitudes.) before pC after Q, = pC (b) Determine the capacitance (in F) and potential difference (in V) after immersion. C, = AV, = (c) Determine the change in energy (in nJ) of the capacitor. AU =