Typed notes covering Physics Lab (Physics3LC) week 10 lab theory and experiment. Contains notes corresponding to "The Attenuation of Sound" lab sections.
○ where pi is the amplitude of the incident wave and ρ is the density of
air(velocity on bottom). Ratio pt/pi is the transmission coefficient. -> What
fraction of the wave is being transmitted?
○ Eqn 10.1 is only an approximation due to diffraction and reflections off the
attenuator/other surfaces that could lead to deviations.
• Velocity of the sound waves u: u = vl, where l is wavelength. Constant at 344m/s in
air at 20C.
• You will place various attenuators between the two speakers and measure how much
they affect the amplitude of the sound waves received by the second speaker.
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