Faster vibrations cause waves with higher frequencies.

True or False

A horse trots away from its trainer in a straight line. moving 38 m away in 9.0 s. It then turns abruptly and gallops halfway back in 1.8 s. Calculate its average speed and average velocity?

Which is an inertial reference frame (or at least a very good approximation of one) ? Which is an inertial reference frame (or at least a very good approximation of one) ? A jet plane flying straight and level at constant speed.

Which is not one of the three tiny bones in the middle ear? cochlea hammer anvil stirrup

A sample contains 24 g of a radioactive isotope. How much radioactive isotope remains in the sample after 2 half-lives? A. 3 g B. 6 g C. 12 g D. 1.5 g

5000 j of heat are added to a system. it does 3500 j of work on the surroundings. what is δe in j?

What three forms of kinetic energy can a polyatomic molecule have?

A parachutist bails out and freely falls 50 m. Then the parachute opens, and thereafter she deceler - ates at 2.0 m/s2. She reaches the ground with a speed of 3.0 m/s.

Why the weight of a body decreases with increases in distance from the earth's surface

On a fishing trip Justin rides in a book 12 km south. The fish aren't biting so they go for kilometers west. They then follow a school of fish 1 km north. What distance did they cover? What was their displacement?

Why is thebsun so bright and hot?