List these things in order of size, starting with the smallest thing: Universe, Earth, Galaxy, Moon, Solar System, Sun

Which diagram correctly demonstrates the various forces acting on a ball moving horizontally with some speed?

Consider an insulating crystal, made up of layers of atoms. what form would you expect the temperature dependence of the phonon heat capacity to approach at extremely low temperatures if the interlayer coupling is i)very strong (rigid coupling), and ii) very weak. explain.

Which pair of quantities includes one quantity that increases as the other decreases during simple harmonic motion?