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2 Questions.

1. If you wished to produce a sound with a wavelenght in air equal to the length of the room, 10m, what would be its frequency?

2.You note a 4.0 second delay for an echo in a canyon. What is the distance to the wall of the canyon?

1. Use the same formula as in your radiop wave qudestion, except this time you use the sounds speed.
(frequency = (sound speed)/(wavelength)

2. (Sound delay)x(speed of sound =
2 x distance to the wall.
Solve for the distance.

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