What will happen if you rub two different materials together?

If gravity is the only force present, what is the total mechanical energy of a rock falling off a cliff at a time when its potential energy is 500 J and its kinetic energy is 600 J? A. 500 J B. 100 J C. 600 J D. 1,100 J

A gas that is exist in outer space is made of? A.) Dark energy B.) Dark matter C.) Baryonic material

A light plane is headed due south with a speed of 200 km/h relative to still air. After 1.00 hour, the pilot notices that they have covered only 137 km and their direction is not south but 15.0∘ east of south. What is the wind velocity?

The speed of light is now defined to be c-2.99792458 x 10^8 m/s

How many neutrons are in an atom of oxygen with a mass number of 18

A small boat is carrying four people across a river. Without any paddling, the boat moves downstream at a steady speed of 5 m/s. If the average weight of the four people is 60 kg, then what is the speed of the boat after one person gets?

Does temperature affect the dissolving phase?

In a clear, coherent, paragraph-length answer, explain why the speed of the apple half way between the release and the maximum height is not half the initial speed.

In pea plants Round (R) is a dominant trait and wrinkled nose (r) is a recessive trait. Which combination would result in wrinkled seeds? 1. RR 2. Rr 3. rr 4. ww

According to the article, data from scientific observations fulfill what three functions