Homework SourseI posted this question yesterday but was not in full agreeme
I posted this question yesterday but was not in full agreement with the solution provided. Please offer insight and comment on my solution.
N.B. Molecular dia 0.37 nm and temp assumed to be 300K.
Previous Chegg solution stated the collision rate with the wall as the reciprocal of dia of sphere divided by <v> (0.5/<v>)^-1. However, I prefer my flux calculation as it does not assume the average distance travelled between wall collision to be one diameter.
Please no spam solutions (very sick of them)
Exercises (8.1) What is the mean free path of an N2 molecule in an ultra-high-vacuum chamber at a pressure of 10-10 mbar? What is the mean collision time? The chamber has a diameter of 0.5 m. On average, how many collisions will the molecule make with the chamber walls compared with collisions with other molecules? If the pressure is suddenly raised to 10-6 mbar, how do these results change? (8.2) (a) Show that the root mean square free path is given by where is the mean free path. (b) What is the most probable free nath lenuth? Solution
the soultion seems to be right.
