A race car has a mass of 1500 kg. What is its kinetic energy in joules if it has a speed of 30 m/s?

List four observations that indicate that a chemical reaction may be taking place

Although respiratory organs vary across different organisms, they all contain respiratory surfaces that have a large surface area and are extremely thin. explain why having an extremely thin respiratory surface with a large surface area is advantageous for the process of gas exchange

Adepositional also feature that forms where a stream enters a lake or an ocean is a