Which branch of physical science is most concerned with studying nonliving matter and $\mathrm{energy}$?

Why do some mountain ranges experience the rain shadow effect in terms of energy $E$ and kinetic energy $\mathrm{KE}$?

What type of energy can be converted to $\mathrm{kinetic}\mathrm{energy}$ when it is used to do work?

Which process in stars is primarily responsible for the formation of elements in the universe?

When is an object's $KE$ at its maximum?

In the context of energy types, is sound energy considered $\mathrm{potential}$ or $\mathrm{kinetic}$ energy?

What is the difference between stored energy and usable energy in the context of $\mathrm{kinetic}\mathrm{energy}$ and $\mathrm{potential}\mathrm{energy}$?