{[ promptMessage ]}

Bookmark it

{[ promptMessage ]}

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

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

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%!

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

View Full Document
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
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

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

View Full Document

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

View Full Document
This is the end of the preview. Sign up to access the rest of the document.

{[ snackBarMessage ]}

### 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
Ask a homework question - tutors are online