165000 s⁻¹ or 165000 Hertz (Hz)
Explanation:
Frequency can be found by dividing velocity in m/s by the wave length in m.
Frequency = v/λ
v is the velocity of the wave in meters per second = 330 m/s
λ is the wavelength of the wave in meters = 0.002 m
Frequency = 330 m/s / 0.002 m = 165000 s⁻¹ or Hz
