3/24/2023 0 Comments Gas particles![]() Walls of containers of gases are treated as perfectly rigid, do not move, and are infinitely massive (in comparison to the particles).Collisions between the particles, and between the particles and walls of a container for the gas, are perfectly elastic collisions.Molecules are in constant, random motion.This again helps support the idea that individual particles don't need to be kept track of, and that the statistical methods of the theory are sufficient to arrive at conclusions and predictions. They are interchangeable in terms of their various properties. Examine kinetic energy and speed histograms for light and heavy particles. Each molecule is treated as identical to any other molecule. and discover how the properties of the gas vary in relation to each other.Instead, statistical methods are applied to analyze the behavior of the system as a whole. In most cases, there are essentially no attractive forces between particles. The kinetic energy of the molecule is greater than the attractive force between them, thus they are much farther apart and move freely of each other. That is, in the energy-momentum relation: E2 p2c2 +m2c4 we have pc mc2 so that the energy can be approximated by: E pc. Gas In a gas, particles are in continual straight-line motion. The number of molecules ( N) is very large, to the extent that tracking individual particle behaviors is not possible. Gas They are defined by the arrangement and movement of their particles. Ultra-relativistic Gas In this assessment, we will consider a gas of distinguishable particles with mass m at temperatures high enough that the particles move relativistically.Specifically, one implication of this is that their size is extremely small in comparison to the average distance between particles. Molecules are treated as point particles. Gas particles move very fast and collide with one another, causing them to diffuse, or spread out until they are evenly distributed throughout the volume of the container.
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