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

Answer:

D. 256 m/s​

Explanation:

d. d as in dog

Answer 2

Answer:

D. 256 m/s

Explanation:

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

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

Speed of a wave is given by

$v=f\lambda$

$\Rightarrow v=16\times 16$

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

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