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 1.0 hz oscillator with a 1.0 f capacitor. you have a spool of 0.25-mm-diameter wire and a 3.6-cm-diameter plastic cylinder. how long must your inductor be if you wrap it with 2 layers of closely spaced turns? express your answer to two significant figures and include the appropriate units.

Two kilograms of air within a piston–cylinder assembly executes a carnot power cycle with maximum and minimum temperatures of 800 k and 300 k, respectively. the heat transfer to the air during the isothermal expansion is 60 kj. at the end of the isothermal expansion the volume is 0.4 m3. assume the ideal gas model for the air. determine the thermal efficiency, the volume at the beginning of the isothermal expansion, in m3, and the work during the adiabatic expansion, in kj.