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A loudspeaker located in air generates sound waves of frequency 1,000 Hz. Some of these sound waves enter a pool of water, where the speed of sound is 1,400 m/s. What is the wavelength of the sound waves in water?

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Answer:

1.4 m

Explanation:

v = Speed of sound in water = 1400 m/s

f = Frequency of sound = 1000 Hz

[tex]\lambda[/tex] = Wavelength

When we multiply the frequency and the wavelength of a wave we get the velocity of sound in that medium

[tex]v=f\lambda\\\Rightarrow \lambda=\dfrac{v}{f}\\\Rightarrow \lambda=\dfrac{1400}{1000}\\\Rightarrow \lambda=1.4\ m[/tex]

The wavelength of the sound waves in water is 1.4 m