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This tag is for questions relating to collision which is the interaction between two or more bodies that results in physical contact and an exchange of momentum between the bodies involved. When it happens, kinetic energy is often exchanged between the molecules’ translational motion and their internal degrees of freedom.

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Particle production at angle relative to beam axis

I think you are saying this by looking at the schematic of the process given in various books. They take direction of final particle at arbitrary angle so that they can look at the distribution as a f …
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13 votes
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Why are ions and electrons at different temperatures in a plasma?

In plasmas, the collision rate among ions or electrons is much larger than the collision rate between ions and electrons. Why is that so? …
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2 votes
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How do I solve for $v_2$ where $mv_1^2 + MU_1^2 = mv_2^2 + M U_2^2$ and $MU_1 - Mv_1 = MU_2 ...

I am getting $ U2=-U1-v1-v2 $ (Remember, these are added according to vector rules) writing the two equations as, \begin{equation} M(U1)^{2}-M(U2)^{2}=m(v2^{2})-m(v1^{2}) \end{equation} \begin{equati …
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