101210 - Physics 121 1 2 We have a slight lead over...

Info iconThis preview shows pages 1–7. Sign up to view the full content.

View Full Document Right Arrow Icon
Physics 121 12/10/10 Prof. E. F. Redish 1 12/10/10 1 12/10/10 2 12/10/10 8 We have a slight lead over Hamilton’s classes (52%-44%) but we are nowhere near 70%!
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Physics 121 12/10/10 Prof. E. F. Redish 2 12/8/10 9 Physics 121 12/8/10 10 Physics 121 12/8/10 11 Physics 121 Average force of gas on the wall = (# of molecules hitting the wall in the time ± t) x (force each molecule exerts on the wall) F wall ± molecule = m ² v x ² t = ³ F molecule ± wall Only the x -component matters. All we need to figure this out is our three basic equations, and a way to count the number of molecules hitting the wall. v x = ± x ± t
Background image of page 2
Physics 121 12/10/10 Prof. E. F. Redish 3 A v x ± t 12/8/10 12 Physics 121 N = n ± Volume (29 = nA v x ² t ± p x = 2 mv x n = number density = # / unit volume 12/8/10 13 Physics 121 v = v x 2 + v y 2 + v z 2 = 3 v x 2 v x = v /3 12/8/10 14 Physics 121 F = N ± p ± t = 1 2 ( nAv x ± t ) 2 mv x ± t ² ³ ´ µ · = nmv x 2 A Interpret F = pA n = N V v x 2 = 1 3 v 2 pA = 1 3 N V mv 2 A pV = N ( 1 3 mv 2 ) = N 2 3 1 2
Background image of page 3

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Background image of page 4
Background image of page 5

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Background image of page 6
Background image of page 7
This is the end of the preview. Sign up to access the rest of the document.

This note was uploaded on 12/28/2011 for the course PHYSICS 121 taught by Professor Shawhan during the Spring '10 term at Maryland.

Page1 / 7

101210 - Physics 121 1 2 We have a slight lead over...

This preview shows document pages 1 - 7. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online