A roller coaster has a mass of 500 kg. It drops from rest at the top of a hill that's 57 m tall. How fast is it going when it reaches the bottom? Acceleration due to gravity is g = 9.8 m/s2.

Assume that you have two objects, one with a mass of 6 kg and the other with a mass of 17 kg, each with a charge of - 0.027 c and separated by a distance of 3 m.

Compare the loudness of sound waves that are in phase when they interfere with the loudness of sound waves that are out of phase when they interfere

The density of a substance is calculated by what

Facts about river deltas

The most important part of physical fitness is. Strength. B muscular endurance c flexibility. D. Cardiovascular

How are mass and weight different? a. Mass is the space an object takes up and weight is the effect of gravity on mass. b. Mass is the amount of matter and weight is the effect of gravity on mass. c.

What were the discoveries of astronomers like Copernicus and Galileo?

A major obstacle to developing good human relations is that

4.) An apartment building is on fire and a guy is trapped on the fire escape ladder. There is a dumpster that is 6.3m away and is filled full of trash, and he is 7m above it.

Calculate the temperature of and power-per-area radiated from a blackbody if the spectral intensity density peaks at (a) gamma rays, λ = 1.50*10-14 m; (b) x rays, 1.50 nm; (c) red light, 640 nm; (d) broadcast television waves, 1.