Physics for IGCSE & O level - Waves And Sounds (Section 2 - No. 45)
If the frequency of a sound wave is 110 Hz and the wavelength is 3 m, what is the speed of the wave?
33 m/s
113 m/s
330 m/s
107 m/s
Vysvětlení
Speed = Frequency x Wavelength = 110 Hz * 3 m = 330 m/s.