Physics stationary waves help

Watch this thread
melonlord.xx
Badges: 12
Rep:
? You'll earn badges for being active around the site. Rep gems come when your posts are rated by other community members.
#1
Report Thread starter 1 month ago
#1
If someone could help me with this question that would be great (:

"In a resonance tube experiment, the shortest length of tube to give a loud sound is found for two different tuning forks. For a fork of a frequency 256Hz, the length is 32cm and for a fork of frequency 512Hz, the length is 15.4cm. Calculate the speed of sound in the tube and the distance of the antinode above the top of the tube."

Thanks
0
reply
Stonebridge
Badges: 13
Rep:
? You'll earn badges for being active around the site. Rep gems come when your posts are rated by other community members.
#2
Report 1 month ago
#2
(Original post by melonlord.xx)
If someone could help me with this question that would be great (:

"In a resonance tube experiment, the shortest length of tube to give a loud sound is found for two different tuning forks. For a fork of a frequency 256Hz, the length is 32cm and for a fork of frequency 512Hz, the length is 15.4cm. Calculate the speed of sound in the tube and the distance of the antinode above the top of the tube."

Thanks
There are 2 parts to the question, it would help if you could give more information on which part you can't do and how far you've got with this.

However...
To give you a couple of clues:
For a resonance tube at it's lowest (fundamental) frequency, the wave inside is a quarter of the wavelength of the sound wave.
Speed of sound = frequency x wavelength.

Name:  W-End correction.png
Views: 10
Size:  18.1 KB

However, there is what is called an 'end correction' to the tube, because the quarter wave doesn't fit exactly inside and pokes out a bit. This 'bit' is the end correction.

Have you done this in your theory?
You get rid of the error caused by the end correction by making the 2 different measurements, as given in the question.
Does this help?
Last edited by Stonebridge; 1 month ago
0
reply
X

Quick Reply

Attached files
Write a reply...
Reply
new posts
Back
to top
Latest

How did The Student Room help you with your university application?

Talking to current university students (12)
17.65%
Talking to peers going through the same thing (24)
35.29%
Speaking to student ambassadors from the universities (5)
7.35%
Speaking to staff members from universities (1)
1.47%
Using the personal statement builder, library or helper service (7)
10.29%
Reading articles about what steps to take (14)
20.59%
Learning about/speaking to Student Finance England (2)
2.94%
Something else (tell us in the thread) (3)
4.41%

Watched Threads

View All