Name___________________________________________________

The Wave Speed Equation

v=λƒ
v = velocity     λ = wavelength       ƒ = frequency

1.  What is the velocity (v) if λ = 8 m and ƒ = 20 Hz?

λ =
ƒ =
v =                                                                                                                   Answer __________

2.  What is the velocity (v) if λ = 6 m and ƒ = 10 Hz?

λ =
ƒ =
v =                                                                                                                   Answer __________

3.  A wave traveling in water has a frequency of 500 Hz and a wavelength of 3.00 meters. What is the speed of the wave?

λ =
ƒ =
v =                                                                                                                   Answer __________

4.  The lowest-pitched sounds humans can hear have a frequency of 20 hz. What is the wavelength of these sound waves if their speed is 340 m/s ?

λ =
ƒ =
v =                                                                                                                   Answer __________

5.   Using the velocity of sound at 343 m/s and given the frequencies of a piano scale, compute the wavelengths of a note that has a frequency of 440hz.

λ =
ƒ =
v =                                                                                                                   Answer __________

6.  The velocity of a wave named Wanda is 200 m/s and it has wavelength of 14 meters.  Wanda’s friend Wendy is moving at 100 m/s at the same wavelength.   Calculate both Wanda and Wendy’s frequency.

Wanda                                                                       Wendy
λ =                                                                               λ =
ƒ =                                                                               ƒ =
v =                                                                               v =