What time interval could the observer hear the sound?
A sound wave has frequency of 2 kHz and wavelength of 35 cm. If an observer is l.4 km away from the source, after what time interval could the observer hear the sound?
- 2 s
- 20 s
- 0.5 s
- 4 s
A sound wave has frequency of 2 kHz and wavelength of 35 cm. If an observer is l.4 km away from the source, after what time interval could the observer hear the sound?
