All Questions
Tagged with collision kinetic-theory
34
questions
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How do you solve instantaneous 3 body collisions
A few years ago I built myself a very basic python program that did some very basic collision mechanics between particles with a mass and velocity and it was helpful in learning a few things and ...
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56
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Derivation of the Coulomb Collision Operator for Plasmas
I am attempting to learn about Coulomb collisions in the kinetic theory of plasmas. In doing so, I have come up with an "intuitive" derivation of a Coulomb collision operator. However, the ...
- 133
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Mean free path equation for plasma
Does the mean free path equation
$$\lambda=\frac{1}{\sqrt{2}\pi d^2 n_v}$$
work for collisions in plasma or just for gas?
- 33
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How is number of collisions per unit distance related to mean free path?
Recently I have been studying Kinetic Theory Of Gases, with one of the topics as collision frequency. I know that collision frequency is inverse of relaxation time which is also the measure of number ...
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Work done in an elastic collision in the following case
In a perfectly elastic collision the two bodies that collide will end up maintaining their complessive initial momenta and kinetic energy. Basically if body A impacts against body B at 10 m/s (with ...
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Does collisions of ideal gas molecules effect its equation of state?
I have been reading Statistical Mechanics by R. K. Pathria & Paul D. Beale , 4th edition . In this book they used a quantity called Virial , which is defined as $\mathcal{V} = \langle\Sigma q_iF_i\...
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How to modify kinetic gas theory to work for macroscopic particles? (2D)
For the first time I framed a question on my own when I was recently playing carrom pool with my cousin and a striking thought ran across my mind!
I was thinking if a square frame is fixed rigidly on ...
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99
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How could I experimentally determine that conservation of kinetic energy holds true for elastic collision?
Given a physics lab with various measurement apparatus and bouncy balls, and the ability to do mathematics, how could I experimentally determine that conservation of kinetic energy holds true for ...
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Kinetic theory of gases [duplicate]
While deriving expression for pressure of gas
We assume that gas molecule has travelled the between two opposite walls , and time taken to travel this distance is Δt= 2l/u .
Then we say that , Force ...
user324098
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Is the average collision duration $\propto T^{1/2}/ P^2$?
Question
So I was reading an old question of mine and realized the average collision duration $\langle \tau \rangle $ must be proportional to:
$$ \langle \tau \rangle \propto \frac{T^{1/2}}{P^2}$$
...
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Are collisions ignored while calculating fluid pressure?
Consider a container of height $h$ filled completely with fluid of density $\rho$, Assume pressure at top is zero therefore pressure at the bottommost points will be $p_b=\rho gh$ and therefore force ...
- 882
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Is this a valid interpretation of the mean relative speed/collision rate of particles in a Maxwell-Boltzmann distribution?
In textbooks, the collision frequency $Z_{ab}$ between two species "a" and "b" is always given as something like:
$$Z_{ab} = n_an_b\sigma_{ab} \Bigg(\frac{8 k T}{\pi \mu}\Bigg)^{1/...
- 21
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111
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Gas particle collision rate dependence on particle velocity/ Hard sphere simulation
From a basic kinetic theory perspective the A-B collision rate $\theta_{AB}$ is given as a function of the mean speed and the number density.$$\theta_{AB} \propto \bar{C}_A n_B$$
If we are considering ...
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Can gas in a room rotate a fan with asymmetrical spokes?
I was asked this question in an interview. The figure in first part of the question was drawn as shown.
The question was to draw the angular position of the point marked on the rim with time. It ...
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112
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Why collisions with other molecules not taken in account here?
I have few doubts related to this derivation
why collisions with other molecules not taken into account since they could also influence the time it takes for one molecule to collide with the wall
how ...
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