Two rectangular parallel plates 2.2 m by 3.7 m are separated by a material with a dielectric constant of 4.8 × 10 −9 F/m. If the capacitance between the plates is 4.3 µF, what is the separation of the...

Two rectangular parallel plates 2.2 m by 3.7 m are separated by a material with a dielectric constant of 4.8 × 10⁻⁹
F/m. If the capacitance between the plates is 4.3 µF, what is the separation of the plates?

A3.2 nF capacitor has an impedance of 0.02 MΩ when an ac voltage is applied to it. What is the frequency of the ac voltage?