Use v = fλ for sound and electromagnetic waves, and calculate distance from wave speed and travel time. For reflected signals, double the one-way distance to obtain the total path.
This question is about sound waves.
A buzzer is an electrical device that produces sound.
The frequency of sound produced by the buzzer is 1400 Hz .
Sound travels at a speed of 340 m/s in air.
Calculate the wavelength of the sound wave from the buzzer.
wavelength = ............ m
- substitution or rearrangement
- evaluation
Example:
- 340 = 1400 x wavelength, or wavelength = v / f
- wavelength = 0.24 m
Accept:
- 0.243, 0.242857..., etc.
- 0.242