Dolphins make sounds in air and water. What is the ratio of the wavelength 𝜆a of a sound in air at sea level to its wavelength 𝜆s in seawater if the speed of sound in water at that specific location

Question

Dolphins make sounds in air and water. What is the ratio of the wavelength 𝜆a of a sound in air at sea level to its wavelength 𝜆s in seawater if the speed of sound in water at that specific location is 1530 m/s and the air temperature is 20.00 ∘C?

Answer 1

The ratio of the wavelengths is equivalent to the ratio of the velocities. So...

λ_a / λs = v_a / v_s = 343/1530

This should get you 0.224