Electrical impedance tomography (EIT) is a medical imaging technique in which a low ac current is passed through part of the body. The impedance between the electrodes provides a measure of body composition. Consider a simplified model in which the body acts as the resistor and capacitor of an RLC circuit, and the external circuit contains an inductance L = 0.80 H as well as the power supply.
(a) If the resonant frequency is measured to be 50 kHz, what is the capacitance? 

(b) How can the resistance be determined?