Diffrences between weak nuclear force and electromagnetic force

Aball has an initial velocity of 3 m/s. if there is no friction, what is the highest it could roll?

Scientific models are based on current knowledge, which can limit their effectiveness when new discoveries are made.

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?