A parallel-plate air-filled capacitor having area 67 cm^2 and plate spacing 2.0 mm is charged to a potential difference of 700 V. Find the following values.
a) the Capacitance
_______pF
b) the magnitude of the charge on each plate
_______nC
c) the stored energy
_______µJ
d) the electric field between the plates
_______V/m
e) the energy density between the plates
________J/m^3