Waves and Sounds

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The Wave Equation: Earthquakes

WAVES-TRBVRT

Suppose you are walking down the street when you suddenly feel the rumblings of a small earthquake. You notice two nearby buildings begin to rock up and down $15$ times every $2 \text{ seconds}$. One of the buildings is at its highest point while the other is at its lowest; the ground between the buildings is not moving nearly as much.