37. Two parallel plates have a capacitance of 0.17 F when they are 1.5 mm apart....

37. ••• Two parallel plates have a capacitance of 0.17 μF when they are 1.5 mm apart. They are connected permanently to a 100-V power supply. If you pull the plates to a distance of 4.5 mm,

(a) what is the electric field between them?

(b) By how much has the capacitor’s charge changed?

(c) By how much has its energy storage changed?

(d) Repeat these calculations if the power supply is disconnected before you pull the plates.