A roller coaster is traveling at 13 m/s when it approaches a hill that is 400 m long. Heading down the hill, it accelerates at 4.0 m/s2. What is the final velocity of the roller coaster? Round your answer to the nearest whole number.

Dr. Arenas is a scientist who has been trying to determine if increasing pressure will increase the sound that occurs when two chemicals explode.

The ___ belt contains perhaps ten of thousands of objects orbiting within about 100 AU of the sun

A wave x meters long has a speed of y meters per second. The frequency of the wave is, a) x/y hertz b) y/x hertz c) Y times X hertz d) y+x hertz

Which law explains a soccer player who kicks a ball with his foot and his toes are left stinging?

On a popular amusement park ride, the riders stand along the inside wall of a large cylinder with a diameter of 8.27 m. The cylinder rotates and when it reaches a rotational frequency of 0.66 revolutions per second the floor drops out.

Which person below is experiencing a delusion? A. Imani, who reads a lot and thinks she will go to an Ivy League school O B. Nia, who thinks that she is the daughter of the president and an extraterrestrial O C.

Large amounts of water that quickly infiltrate soil on a sloped surface can A. slow down the effects of mass movement by making the soil thicker and more resistant to flow B. hold soil particles together and reduce the stress on the soil C.

Our Sun radiates 4 X 10^26 Joules of energy each second it shines. Calculate how many 50 megaton hydrogen bomb explosions would be needed to produce the same 4 X 10^26 Joules of energy that the Sun radiates in one second.?

What was Operation Overlord? a. the code name for the Allied invasion of Normandy b. the code name for the Axis invasion of France c. the code name for the project to build atomic bomb d.

A 2.44 x 10^3 kg car requires 5.3 kJ of work to move from rest to some final speed. During this time, the car moves 27.4 m. Neglecting friction, find a) the final speed b) the net horizontal force exerted on the car