Why doesn't energy exhaust itself over time? For example, isn't kinetic energy required for an object to move, but won't the kinetic energy decreases as the object moves since it uses that energy?

About fifteen years ago I read in a book (Physics by James Walker 3rd edition) that dark brown color reflects IR better than any other color and consequently weather heat since our bodies get most heat as IR and therefore wearing very dark brown clothes (almost black) helps keep the body cool. He...

As far as I am aware, the strong interaction is attractive only, and its carrier, the gluon, is massless meaning it has unlimited range. If this is the case, how come we only observe quarks in pairs and triplets? What's preventing every quark in the universe from attracting every other quark and ...

Can an electric field pass through a charged particle? As the field is energetic it would get absorbed by charge as I think 🤔. Let assume that there are two electrons one behind the other such that it seems like one electron in front is blocking the electric field to reach that electron behind....

The Zeroth Law of Thermodynamics states that if two systems are in thermodynamic equilibrium with a third system, the two original systems are in thermal equilibrium with each other. It says that they reach the same temperature after an infinite amount of time. Why can't we quantify this time t...