Lecture_30_PPT

Lecture_30_PPT - Chapter 18 Superposition and Standing...

Info iconThis preview shows pages 1–9. Sign up to view the full content.

View Full Document Right Arrow Icon
Chapter 18 Superposition and Standing Waves
Background image of page 1

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

View Full DocumentRight Arrow Icon
Standing Waves in a String 0, 1, 2, 3, 2 n xn λ == K L ƒ 22 n vn T n LL µ
Background image of page 2
Standing Waves in an Air Column z Standing waves can be set up in air columns as the result of interference between longitudinal sound waves traveling in opposite directions
Background image of page 3

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

View Full DocumentRight Arrow Icon
Standing Waves in an Air Column z The phase relationship between the incident and reflected waves depends upon whether the end of the pipe is opened or closed z Waves under boundary conditions model can be applied
Background image of page 4
Standing Waves in an Air Column, Open Ends z As the compression region of the wave exits the open end of the pipe, the constraint of the pipe is removed and the compressed air is free to expand into the atmosphere z The open end of a pipe is a displacement antinode in the standing wave s (x, t) = s max cos (kx – ω t) L s (0, t) = s( L ,t) = s max java
Background image of page 5

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

View Full DocumentRight Arrow Icon
Standing Waves in an Open Tube z Both ends are displacement antinodes z The fundamental frequency is v /2 L
Background image of page 6
Standing Waves in an Air Column, Closed Ends z The rigid barrier at this end will not allow longitudinal motion in the air z A closed end of a pipe is a displacement node in the standing wave s (x, t) = s max cos (kx – ω t) L s (0, t) = s( L ,t) = 0
Background image of page 7

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

View Full DocumentRight Arrow Icon
Standing Waves in a Closed Tube z Both ends are displacement nodes z The fundamental frequency is v /2 L
Background image of page 8
Image of page 9
This is the end of the preview. Sign up to access the rest of the document.

This note was uploaded on 01/28/2011 for the course PHYS 011 taught by Professor Nianlin during the Fall '08 term at HKUST.

Page1 / 29

Lecture_30_PPT - Chapter 18 Superposition and Standing...

This preview shows document pages 1 - 9. Sign up to view the full document.

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