Can someone describe the behavior of magnets?

Around faucet handle is part of a(n) a. lever b. screw c. inclined plane d. wheel and axle

Atomic nuclei of almost all elements consist of

Which of the following will cause an induced current in a coil of wire? the constant field of the earth passing through the coil a magnet resting near the coil a magnet being moved into or out of the coil a wire carrying a constant current near the coil