Which wave requires a medium for trasmission?

a. Light

b. Radio

c. Infrared

d. Sound

What is domain theory? How does it explain how an electromagnet become magnetic

g An inductor used in a dc power supply has an inductance of 12.0 H and a resistance of It carries a current of 0.300 A. (a) What is the energy stored in the magnetic field

You find a blood stain that you know was caused by a gunshot. The blood stain would be considered a (n): Passive stain Transfer stain Impact stain Active stain

A ray moving through glass (n = 1.51) passes into acetone (n = 1.36). How much does its velocity change?

Time that is measured in definite periods such as minutes, days and years is called A. Relative time B. Absolute time Time that is judged according to some other "marker" such as a persons gray hair and wrinkles is called A. Relative time B.

A 72-kg fisherman in a 114-kg boat throws a package of mass m = 15 kg horizontally toward the right with a speed of vi = 5.0 m/s.

Roberto creates an animation titled "Flying through an Atom." The animation makes it seem as if the viewer passes all the way through an atom, starting from one side, then through the atom's center, and then leaving through the other side.

Which part of the ear vibrates at the frequency of sound waves

A submarine that is in the sea what principle is that

1. It takes 26.5 N to pull a 72 kg sled across snow. What is the coefficient of friction? 2. A 565 N rightward force pulls a large box across the floor with a constant velocity of 0.75 m/s. If the coefficient of friction is 0.