What are three machines that depend on gravity to work

What happens when a sound wave moves from water to air?

Suppose that you hear a clap of thunder 16.2 s (seconds) after seeing the associated lightning stroke. The speed of sound waves in air is 343 m/s and the speed of light in air is 3.00*10^8 m/s. How far are you from the lightning stroke?

A substance that Connor be broken down into simplersubstance by ordinary chemical means

A cyclist is traveling at a constant velocity of 5.00 m/s.

Which of the following transfers charge most easily? Semiconductors, nonconductors? Conductors? Insulators?

Which of the following is used to measure weight? Newtons Liters Kilograms Meters

Intravenous infusions are often made under gravity. At what height should the bottle be placed so the liquid pressure is 700 mm-H2O?

What conditions are required for nuclear fusion that prevent it from being used to generate electric energy?

What conditions in the nucleus are likely to result in the nucleus breaking apart? A. When the repulsion of the strong force is weaker than the repulsion of the electrostatic force B.

What color do you see when all colors of light are reflected