A parallel-plate vacuum capacitor has 8.56J of energy stored in it. The separation between the plates is 3.80mm. If the separation is decreased to 1.45mm,
Part A:
what is the energy now stored if the capacitor was disconnected from the potential source before the separation of the plates was changed?
Part B:
What is the energy now stored if the capacitor remained connected to the potential source while the separation of the plates was changed?