A community for students. Sign up today!
Here's the question you clicked on:
 0 viewing
 2 years ago
What is the shortest air column, closed at one end, that will resonate at a frequency of 440 Hz when the speed of sound is 344 m/s?
I tried using the wavelength= v/f formula, but I keep getting the wrong answer...
 2 years ago
What is the shortest air column, closed at one end, that will resonate at a frequency of 440 Hz when the speed of sound is 344 m/s? I tried using the wavelength= v/f formula, but I keep getting the wrong answer...

This Question is Closed

JamesJ
 2 years ago
Best ResponseYou've already chosen the best response.1well you can calculate the wavelength. But how does that wavelength relate to the column of air?

JamesJ
 2 years ago
Best ResponseYou've already chosen the best response.1...and it depends if it is open or closed. Yours is closed. This might help you: http://hyperphysics.phyastr.gsu.edu/hbase/waves/opecol.html

Cutiepo0
 2 years ago
Best ResponseYou've already chosen the best response.0I still don't really know what to do :( I don't know how the length of the column relates to anything

Cutiepo0
 2 years ago
Best ResponseYou've already chosen the best response.0SO because the wavelength is .8, and in a closed cylinder, the length is 1/4 the wavelength, the answer is .2?

luthier93
 2 years ago
Best ResponseYou've already chosen the best response.0Wavelength is v/4L for closed tube. Solve that for L to find length.

JamesJ
 2 years ago
Best ResponseYou've already chosen the best response.1The wave doesn't oscillate at the closed end; it can't. That's why there's a node at that end. At the open end, that's the natural place for an antinode. So if you drew out one entire wave form 0 to max to 0 to min to 0, you can see that that first antinode is at the max, and that is 1/4 of the total wave length. So, given f and v, you have solved for wavelength, lambda. Now the length of that tube is L = lambda/4.
Ask your own question
Ask a QuestionFind more explanations on OpenStudy
Your question is ready. Sign up for free to start getting answers.
spraguer
(Moderator)
5
→ View Detailed Profile
is replying to Can someone tell me what button the professor is hitting...
23
 Teamwork 19 Teammate
 Problem Solving 19 Hero
 Engagement 19 Mad Hatter
 You have blocked this person.
 ✔ You're a fan Checking fan status...
Thanks for being so helpful in mathematics. If you are getting quality help, make sure you spread the word about OpenStudy.