A1,000 kg car has 50,000 joules of kinetic energy. what is it’s speed

What sort of waves exhibit the doppler effect?

Why does lightning travel from clouds to the ground?

Consider an ideal gas at 27.0 degrees celsius and 1.00 atmosphere pressure. imagine the molecules to be uniformly spaced, with each molecule at the center of a small cube. what is the length l of an edge of each small cube if adjacent cubes touch but don't overlap?