Tolong jawab pertanyaan saya nomor 1

Speed of wave equal to the wavelength times the frequency of wave, thus the frequency can be concluded as:
f = v/λ
Where f, v, and λ are the frequency of wave, the wave speed, and wavelength respectively
We know that the wave speed is 340 m/s and the wavelength is 34 m, then
f = 340/34 = 10 Hz