Question #2808f

1 Answer
Meave60
May 23, 2015

The velocity of sound is equal to its wavelength times its frequency in Hz. v=lambdaf, where lamba is the wavelength and f is the frequency. 1 Hertz=1/"s"

Scientists have detected infrasonic sound waves with frequencies as low as 13 Hz being produced by elephants. Assuming a speed of sound of 350 m/s, determine the wavelength of these sound waves.

Given:
f=13"Hz"=13/"s"
v=350"m/s"

Unknown:
lambda

Solution:
Solve v=lambdaf for lambda .

lambda=v/f=(350m/cancel(s))/(13/cancel"s") = 27"m"

http://www.physicsclassroom.com/calcpad/sound/problems

Related questions
See all questions in Sound waves
Impact of this question
3183 views around the world
You can reuse this answer
Creative Commons License