PHYS 117

Midwestern University

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W2-3-notes
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23

May 2021

2020/2021
Sound and sound waves  sound waves are longitudinal waves (also called compression or pressure waves)  get vibrations from source of sound (eg. loudspeaker, vocal chords)  individual molecules vibrate back and forth (horizontal motion) about (fixed) equilibrium position  get a travelling wave moving through gas, liquid, or solid (needs a “medium”)  frequency of the wave is determined by the source PHYS117  the wavelength  spe...
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