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 1.1 hz oscillator with a 1.0 f capacitor. you have a spool of 0.25-mm-diameter wire and a 4.0-cm-diameter plastic cylinder.

how long must your inductor be if you wrap it with 2 layers of closely spaced turns?

As you are trying to move a heavy box of mass m, you realize that it is too heavy for you to lift by yourself. there is no one around to , so you attach an ideal pulley to the box and a massless rope to the ceiling, which you wrap around the pulley. you pull up on the rope to lift the box. use g for the magnitude of the acceleration due to gravity and neglect friction forces. once you have pulled hard enough to start the box moving upward, what is the magnitude f of the upward force you must apply to the rope to start raising the box with constant velocity? express the magnitude of the force in terms of m, the mass of the box.

What are the similarities & differences between a thermistor and a light dependent resistor in physics?

What is a subatomic particle with a negative charge and very little mass?