Explain why the friction force between two surfaces increases if the force is pushing the surfaces together increases.

A rock is shot vertically upward from the edge of the top of a tall building. The rock reaches its maximum height above the top of the building 1.60 s after being shot.

If the temperature at the surface of earth (at sea level) is 40°c, what is the temperature at 2000 m if the normal lapse rate is 6.4°c/1000 m?

Which will reduce the possible environmental damage associated with mining uranium? installing newer water recycling systems in older power plants increasing the reprocessing of used fuel for reuse building additional fission nuclear power plants

What type of energy is a hot cup of soup and is it mechanical or not?

How many atoms are represented by one formula unit of aluminum sulfite, al2 (so3) 3?

Ariana is accelerating her car at 4.6 m/s2. It took her 10 seconds to reach this acceleration. Her starting velocity was 0 m/s. What was her final velocity? A. 0 m/s B. 2.3 m/s C. 4.6 m/s D. 46 m/s

Read the scenario below and answer the question that follows. Molly and Mark are new parents. Their daughter Alvina often cries when she is uncomfortable. Each time Alvina cries, her parents give her a stuffed rabbit.

A 6.0-kg ball is sliding to the right at 25.0m/s and strikes a second ball (15-kg) that is initially at rest head-on. After the collision, the 6-kg ball moves to the left at 12.5m/s. What is velocity of the second ball?

At a certain harbor, the tides cause the ocean surface to rise and fall a distance d (from highest level to lowest level) in simple harmonic motion, with a period of 12.4 h. how long does it take for the water to fall a distance 0.

What is the average speed of an object with a total distance traveled of 45 meters in 50 seconds