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# Waves

Waves are disturbances that transport energy without transporting mass. Learn the mechanism underlying sound, deep ocean swells, light, and even the levitation of objects in mid air.

**Assumption**

- The speed of sound is \( u = 340 \text{ m/s}. \)

**Assumption**

- The speed of sound is \( u = 340 \text{ m/s}. \)

A person is riding a merry-go-round which has a radius of \( r = 3 \text{ m} \) and an angular speed of \( \omega = 3 \text{ rad/s}. \) If the person starts to blow a whistle of frequency \( f= 485 \text{ Hz},\) what is the approximate highest frequency heard by a listener at rest a long distance away?

**Assumption**

- The speed of sound is \( u = 340 \text{ m/s}. \)

**Assumption**

- The speed of sound is \( u = 340 \text{ m/s}. \)

**Assumption**

- The speed of sound is \( u = 340 \text{ m/s}. \)

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