Recent content by Efrain Garcia

Well, it is a particles movement. Ergo, kinetic energy. It can lose some of this energy by bumping into other atoms, giving off some of that energy directly, or give off photons, decreasing it's kinetic energy. That's why electrons and other particles more when excited by absorbing photons.

What is the difference, really? To the observer in the elevator, the force of gravity does change. If you are an observer outside the elevator, then you could say the attraction of gravity is the same, but both would be correct. I guess it just comes down to Newtonian v Einsteinian definitions...

Heat doesn't need other molecules in order to propagate. In a vacuum, particles can lose quantum kinetic energy (heat) by giving off photons. We see this as infrared light, UV, visible light, etc. Heat doesn't have mass, it is used to describe energy. There is no particle that carries heat, heat...

That can't be correct. If you step on an elevator and stand on a scale, then the elevator goes down, the scale will register LESS weight. And this is where points of reference come in. If you take the point of view of the baseball, and not that of an outside observer, the force of gravity acting...

Actually, they would always be equal. Weight is the force of gravity acting on mass, so as the elevator goes down, the normal force decreases, but so does your weight. They will always be in balance. I think what he meant was not weight, but mass. Mass doesn't change, as it is a measure of...

Heat is the energy and random motion of particles. Temperature is the measurement of that motion. For example, the less a particle vibrates, the "colder" it is. The more a particle moves, the "hotter" it is. The distribution of heat across many particles is simply the system trying to become equal.