Sound Energy

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Sound Energy

Postby ScienceFreako on July 8th, 2011, 10:55 pm 

1.Why do a cup with lesser water produce a lower pitch sound when hit with a stick as compared to a cup with more water?

2. Is sound produced by the vibration of air particles?
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Re: Sound Energy

Postby CanadysPeak on July 9th, 2011, 7:10 pm 

Open this,

http://www.physics.smu.edu/~olness/www/ ... waves.html

Change the radio buttons to one end closed.

Vary the length of the tube and see what happens to the wavelength (thus frequency).

Remember that the speed of sound in most materials is about constant for various physical arrangements.
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Re: Sound Energy

Postby ScienceFreako on July 10th, 2011, 2:27 am 

CanadysPeak wrote:Open this,

http://www.physics.smu.edu/~olness/www/05fall1320/applet/pipe-waves.html

Change the radio buttons to one end closed.

Vary the length of the tube and see what happens to the wavelength (thus frequency).

Remember that the speed of sound in most materials is about constant for various physical arrangements.



Thanks for your help. So i guess is the lesser amount of water, the more the wavelength is thus lower pitch sound is produced?
ScienceFreako
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Re: Sound Energy

Postby CanadysPeak on July 10th, 2011, 8:11 am 

ScienceFreako wrote:
CanadysPeak wrote:Open this,

http://www.physics.smu.edu/~olness/www/ ... waves.html

Change the radio buttons to one end closed.

Vary the length of the tube and see what happens to the wavelength (thus frequency).

Remember that the speed of sound in most materials is about constant for various physical arrangements.



Thanks for your help. So i guess is the lesser amount of water, the more the wavelength is thus lower pitch sound is produced?


You got it!

Now take an empty plastic milk jug and put it under a water faucet so that it fills quickly. Listen to the pitch of the sound, putting your ear as close to the mouth of the jug as you can without getting wet.
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