Question:

QUESTION 9 An eagle flying at 28 m/s emits a cry whose frequency is 370 Hz. A blackbird is moving in the same direction as the e

QUESTION 9
An eagle flying at 28 m/s emits a cry whose frequency is 370 Hz. A blackbird is moving in the same direction as the eagle at 11.32 m/s. (Assume the
speed of sound is 343 m/s). What frequency does the blackbird hear (in Hz) as the eagle approaches the blackbird?

QUESTION 9 An eagle flying at 28 m/s emits a cry whose frequency is 370 Hz. A blackbird is moving in the same direction as the eagle at 11.32 m/s. (Assume the speed of sound is 343 m/s). What frequency does the blackbird hear (in Hz) as the eagle approaches the blackbird?

Answer

vo
vo
Eagle
v-vogn
.
blackbira
Source
observer
As we know apparent
frequency n'a (4
V
given n=370 Hz
Vo = 11-32 m/s Vs=28 ms
v=343 mis
'343-11.322
W- 327x370
343-28
nl = 331068 x 370
315
nl = 389.59 H2
ni
[

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