2. (2 point) The parallel plate capacitor used in this experiment has two circular plates of radius 20 cm. For a plate spacing of 1 mm (and no dielectric material between the plates), calculate the theoretical capacitance of this capacitor?4. (4 point) For the same capacitor plates as in question 2 but with a 1 mm air gap plus a 5 mm thick dielectric with unknown dielectric constant, you measure a charge of 8 nC with a voltage of 50 volts between the plates. What is the dielectric constant of the unknown dielectric