Consider a parallel-plate capacitor with charge Q and area A, filled with dielectric material having dielectric constant κ. It can be shown that the magnitude of the attractive force exerted on each plate by the other is F = Q2/(2κε0 A). When a potential difference of 100 V exists between the plates of an air-filled 20-µF parallel plate capacitor, what force does each plate exert on the other if they are separated by 2.0 mm?