Question

A sound wave traveling through dry air has a frequency of 16 Hz, a wavelength of 22 m, and a speed of 350 m/s. When the sound wave passes through a cloud of nitrous oxide, its wavelength changes to 16 m, while its frequency remains the same. What is its new speed? (The equation for the speed of a wave is v= f x 1.)

A. 350 m/s
B. 16 m/s
C. 5,600 m/s
D. 256 m/s​

It's D

Answer 1

D. 256 m/s​

Step-by-step explanation:

d. d as in dog

Answer 2

D. 256 m/s

Step-by-step explanation:

`f` = Frequency of the wave =
`16\ \text{Hz}`

`\lambda` = Wavelength =
`16\ \text{m}`

Speed of a wave is given by

`v=f\lambda`

`\Rightarrow v=16* 16`

`\Rightarrow v=256\ \text{m/s}`

The speed of the wave as it passes through the cloud of nitrous oxide is
`256\ \text{m/s}`.