something69
15.12.2019 •
Physics
Abumblebee buzzes past you at 3 m/s. the frequency of the hum made by its wings is 152 hz. assume the speed of sound to be 342 m/s. what is the observed frequency of the hum as the bumblebee approaches you?
155 hz
153 hz
150 hz
149 hz
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Ответ:
153 Hz
Explanation:
The apparent frequency heard by the listener is given by Doppler effect which states that apparent frequency heard by listener varies if the there is relative motion between the source and the listener.
In the given situation, observer is stationary and source of sound is approaching the listener. Thus,
Ответ:
ok
Explanation: