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PH 223 20:3-5

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by

Richard Datwyler

on 14 September 2016

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Transcript of PH 223 20:3-5

Waves
20:3-5
I clickers
The displacement of a wave traveling in the positive x-direction is
Find frequency, wavelength and speed
your turn, same question
find frequency, wavelength and speed from
this displacement equation
Bonus, now give me the velocity equation
picking up where we left off, and a bit more
"What makes a sinusoidal wave sinusoidal? I understand that it is sine wave but sine waves can have varying amplitudes. Does the period have to be constant?"
"Why do only certain waves harm our bodies when many different waves are able to pass through us? (ultrasound and x-ray versus UV for example)"
"Equation 20.8
I am unsure how that statement describes a wave in motion."
"In the Phase Difference equation, how did the k become 2pi?"
"Are there sensors that exist which can detect the curvature of a spherical wave such as a sound wave. And maybe use that to pinpoint location?"
" But in a 3D Wave, such as sound, How does that wave travel?"
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