Physics for IGCSE & O level - Waves And Sounds (Section 3 - No. 36)
How is the wavelength of the ultrasound in water calculated, when frequency is 40kHz?
Speed of water/40kHz
1400 m/s x 40 kHz
40kHz/Speed of water
40 kHz x time
Giải thích
Wavelength = Speed / Frequency