This question involves the concepts of wave speed, wavelength, and frequency.
The frequency of the wave in seawater will be "2.68 Hz".
The relationship between speed, wavelength, and frequency of the wave can be given by the following formula:
[tex]v=f\lambda\\\\\lambda =\frac{v}{f}[/tex]
Here, the wavelength of the wave is a constant property. Therefore,
[tex]\frac{v_1}{f_1}=\frac{v_2}{f_2}[/tex]
where,
Therefore,
[tex]\frac{3950\ m/s}{7.05\ Hz}=\frac{1500\ m/s}{f_2}\\\\f_2=\frac{(1500\ m/s)(7.05\ Hz)}{3950\ m/s}[/tex]
f₂ = 2.68 Hz
Learn more about wavelength here:
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