i need help on my science fair project and if you have other science projects dealing with sound that would be great.
2006-12-27 06:52:48 · 7 answers · asked by james s 2 in Science & Mathematics ➔ Physics
I think we are missing part of the question. It needs restated exactly as stated in the project.
The article on magnetic slurries doesn't mean a magnet affects the speed of sound. What happened in the slurry is that the magnetic particles formed a new medium for the sound to travel. Depending on the density of the medium, the speed of sound changes.
It could aslo be a very simple question too. Sound will travel faster in a magnet then it will in air. The magnet is a solid(denser medium) sound will move much faster in it.
If you could affect the air(changing it's density) using magnets then you could affect the speed of sound. Speed of sound will change with temperature and humidity. It also changes with altitude.
2006-12-27 07:57:08 · answer #1 · answered by Carp 5 · 0⤊ 0⤋
It's not obvious that magnetic fields should affect the speed of sound. Although a quick google search found this:
http://www.sciencedirect.com/science?_ob=ArticleURL&_udi=B6TVG-4343B1S-K&_coverDate=06%2F01%2F2001&_alid=514883857&_rdoc=1&_fmt=&_orig=search&_qd=1&_cdi=5534&_sort=d&view=c&_acct=C000050221&_version=1&_urlVersion=0&_userid=10&md5=e75d500f868e60a5dfe24b8e88f3b4c7
So apparently it does. Unfortunately, I expect the reason for any change depends very strongly on what the material is, and maybe even what shape of magnetic field you are dealing with.
Anyway, this sounds very advanced for your science fair project. Maybe you should pick another topic?
2006-12-27 07:45:06 · answer #2 · answered by Anonymous · 0⤊ 0⤋
probably because-
as sound travels due to the motion of the particles and if it travels through a medium having particles which are charged its speed may be affected coz these moving charged particles are affected by the magnetic force exerted by the magnet.
2006-12-27 07:19:18 · answer #3 · answered by Abhinav 2 · 0⤊ 1⤋
I can't think of any reason why they would. Where did you hear that they do?
2006-12-27 07:15:18 · answer #4 · answered by eri 7 · 0⤊ 0⤋
Hi. As far as I know they don't.
2006-12-27 06:59:44 · answer #5 · answered by Cirric 7 · 0⤊ 0⤋
What makes you think they do?
2006-12-27 07:11:19 · answer #6 · answered by sojsail 7 · 1⤊ 0⤋
little bite slower(?)
2006-12-27 07:49:06 · answer #7 · answered by JAMES 4 · 0⤊ 0⤋