An underwater hydrophone records the pressure oscillations caused by a low-frequency acoustic wave propagating through ocean water. The recorded signal trace is shown below:
a.[2]
Calculate the frequency of the acoustic wave.
b.[1]
State the equation that links frequency, wavelength, and wave speed.
c.[2]
The acoustic wave travels through the ocean water at a speed of 1540 m/s1540\text{ m/s}1540 m/s. Calculate the wavelength of this wave.