A satellite of mass 4500 kg orbits the Earth in a circular orbit of radius of 7.2 × 106 m (this is above the Earth's atmosphere).The mass of the Earth is 6 × 1024 kg. What is the speed of the satellite?

Distinguish between linear momentum and angular momentum

Complete these sentences. if a roller coaster train has a potential energy of 1,500 j and a kinetic energy of 500 j as it starts to travel downhill, its total energy isj. once the roller coaster train gets closer to the bottom of the hill, its kinetic energy increases to 1,100 j, and its potential energy decreases to j. when the train reaches the bottom of the track and is traveling along the ground, its kinetic energy isj.

In general what determines whether atoms will form chemical bonds?