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Introductory Physics Homework Help
Effusing gas onto the interior of an evacuated sphere
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[QUOTE="Toby_phys, post: 5876269, member: 591646"] [h2]Homework Statement [/h2] A gas effuses into a vacuum though a small hole of area [tex]A[/tex]. Show that if the particles effused into an evacuated sphere and the particles condensed where they collided that there would be a uniform coating. (7.6 of Blundell and Blundell) [h2]Homework Equations[/h2] Angular probability distribution. The probability a particle is traveling between [tex]\theta[/tex] and [tex]\theta+d\theta[/tex] to the normal of the small hole. $$ cos\theta sin\theta d\theta $$ Surface area of a ring defined on the surface of a sphere with radius of unity where the angles go from [tex]\theta[/tex] to [tex]\theta+d\theta[/tex] $$ 2\pi sin\theta d\theta $$ [h2]The Attempt at a Solution[/h2] Surely it would just be amount of particles over area which is proportional to [tex]cos\theta[/tex]. This is clearly not uniform [/QUOTE]
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Effusing gas onto the interior of an evacuated sphere
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