Assignment B

Sound Waves

Sound Waves!

What  type  of   wave  is  this?  

Longitudinal Wave Example

• h0ps://www.youtube.com/watch? v=GIkeGBXqWW0&ab_channel=ShyamSrinivasan  

Components of a Sound Wave

Components of a Sound Wave

• A:  Amplitude     • 𝜆:  wavelength   •  f:  frequency      

𝑣=𝜆f  

•  Pitch  (high/low)   •  Volume  (loud/soM)  

How fast does sound travel?

/v B ρ=

Bulk  modulus  

Density  

•  B  depends  on  pressure  and  volume   •  But  we  can  re-­‐write  this  in  terms  of  only  one  

variable    

The  speed  of  sound  in  air  at  a  constant  temperature   is  a  constant.  

C331 1 273 T

v = +

v  at  room  temperature  (20°𝐶)  is  about  343  m/s