CH+5+Sec+4

Futes and organ pipes produce dound by stoping waves on the metal siding.
 * What do you think?**


 * Physics Talk**
 * Diffraction: bending of a wave around an obstacle or through an opening
 * It bends more when the wave length is bigger then the opening
 * Closed end of a tube has a node
 * wavelength is doubled
 * Open tubes have antidotes
 * result in noise


 * Checking up**
 * 1) Waves diffract by bending and will change direction to fit through different openings.
 * 2) Wavelength (ƒ)=v
 * 1) Wavelength (ƒ)=v

1) a. Both are caused by standing waves, have harmonics that are octives apart, changing their lengths of string vs. tube change the frequency b. They are different because string moves the air, string has nodes on both ends while tubes have one node and one anti node
 * PTG**

3) 11m, the pipes are closed at one end (1 antinode) or open (2 antinotes) closed pipe: 22 open: 44

Large wavelenght= low note when speed is constant because they are directly related

4) Wavelength= 12m Frequency= 28.3 Hz 3*2=6m Frequency=56.6 m

5) Shorter pipe has a higher frequency. This one is 3 times higher defraction PICTURE

time delay v=d/t 340m/s=1600/t t=4.71

The wave speed effects the frequency and wavelength..... makes sounds by using different sized pipes to carry a wave. This changes where the nodes and antinodes are located and changes the sound
 * What do you think now?**