Question

Whale communication. Blue whales apparently communicate with each other using sound of frequency 17.0 Hz, which can be heard nearly 1000 km away in the ocean. What is the wavelength of such a sound in seawater, where the speed of sound is 1531 m/s?

Answer 1

Answer:

Wavelength, $\lambda=90.05\ m$

Explanation:

Given that,

Frequency of the sound wave, f = 17 Hz

It is heard 1000 km away in the ocean

The speed of sound is, v = 1531 m/s

Let $\lambda$ is the wavelength of sound in seawater. We know that the relation between frequency and wavelength is given by :

$v=f\times \lambda$

$\lambda=\dfrac{v}{f}$

$\lambda=\dfrac{1531\ m/s}{17\ Hz}$

$\lambda=90.05\ m$

So, the wavelength of such a sound in seawater is 90.05 meters. Hence, this is the required solution.