A parallel-plate capacitor in air has a plate separation of 1.41 cm and a plate area of 25.0 cm2. The plates are charged

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A parallel-plate capacitor in air has a plate separation of 1.41
cm and a plate area of 25.0 cm2. The plates are charged to a
potential difference of 270 V and disconnected from the source. The
capacitor is then immersed in distilled water. Assume the liquid is
an insulator.
(a) Determine the charge on the plates before and after
immersion. before _____pC after______ pC
(b) Determine the capacitance and potential difference after
immersion. Cf =____ F ΔVf =_____ V
c) Determine the change in energy of the capacitor. nJ