A roller coaster with a potential energy of 235,200 J sits at the top of a 30 m high hill. What is the mass of the roller coaster? (Formula: PE = mgh)

A light wave moves from a medium where particles of matter are closely packed to a medium made of very little matter. How do you expect the light wave to travel differently? The light will change wavelength and lose energy.

Which two supreme court cases delt with the first amendment rights of students in public schools

What advantage does absolute-age dating have over relative-age dating? Explain

Ways to determine properties of screws

Why was the theory of plate tectonics met with challenges from other scientists when it was first proposed? a. there was no evidence to support it b. the scientist who proposed it was obviously biased c.

What is the magnetic force (in newtons) on a particle traveling in a 1.5 T magnetic field if q = 7.5 microcoulombs and v = 1.75 * 106 m/s at a 45° angle to the magnetic field? Answer with three signficant digits.

A car traveling on a straight road at 15.0 meters per second accelerates uniformly to a speed of 21.0 meters per second in 12.0 seconds. The total distance traveled by the car in this 12.0-second time interval is (1) 36.0 m (3) 216 m (2) 180.

A roller coaster with a potential energy of 235,200 J sits at the top of a 30 m high hill. What is the mass of the roller coaster? (Formula: PE = mgh)

This is when minerals break on specific planes.

2. A plane flies at 200 m/s for 20 sec ... How far is that?