In recent years it has been possible to buy a 1.0 F capacitor. This is an enormously large amount of capacitance. Suppose you want to build a 2.4 Hz oscillator with a 1.0 F capacitor. You have a spool of 0.3 mm diameter wire and a 3.2 cm diameter plastic cylinder. How long must your inductor be if you wrap it with 2 layers of closely spaced turns?