contestada

A sound wave that has a wavelength of 2 m in room-temperature air has a frequency of about
A. 170 Hz.
B. 1360 Hz.
C. 2040 Hz.
D. none of the above

Respuesta :

AL2006

The speed of sound in normal room air is about 340 meters/sec.

           Frequency = (speed) / (wavelength) .

                             = (340 m/s) / (2 m)  =  170 /sec = 170 Hz .

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