Gas is a state of matter. Vapor is a state of equilibrium between a gas and a liquid, which can easily be converted to a liquid by applying pressure and without changing the temperature.

Dynamic pressure is the continuous physical force exerted on an object by something such as air on fluid. Static pressure is the physical force exerted on an object that is not in motion.

Physics is the study of matter, as well as its motion through space and time, and how it reacts with heat, light, electricity, and sound. Physics also strives to study and understand the related forces such as...

Physics is the study of matter. It deals with what matter is and how it reacts with heat, light, electricity, and sound. Physics is a type of natural science. Metaphysics, on the other hand, is a branch of...

Quality is a measure of excellence or of a state of being. It describes something, either of how it was made, or how if is as compared to others. Quantity, on the other hand, is the extent, size, or sum of...