Copyright © Michael Richmond.
This work is licensed under a Creative Commons License.
Joe sings into a long cardboard tube of radius r = 0.2 m. He hits a perfect middle C (256 Hz), causing the air molecules to shake back-and-forth. At the far end of the tube, the sound wave carries a power of 0.0001 Watt = 0.0001 Joule/sec .
Q: How large is the amplitude of motion of the air molecules
in the tube?
Copyright © Michael Richmond.
This work is licensed under a Creative Commons License.