8. You're gonna need a bigger boat... A boat moving eastward at 19.4 knots (10m/s) is monitoring an approaching object using its sonar (SOund NAvigation and Ranging) operating at 15.0 kHz. The speed of sound in sea water at the time of the reading is 1515 m/s. What is the speed of the unkown object if the sonar receives an echo of 15.6 kHz. Vs = 10 fo=15000 Hz %3D 10 m/s V = 1515 Vo = ?

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I don't know how to do this. I know it the Doppler effect but because of the echo I am confused. Thanks a lot!

Champlain College
Physics 203-NYC
8. You're gonna need a bigger boat...
A boat moving eastward at 19.4 knots (10 m/s) is monitoring an approaching object
using its sonar (SOund NAvigation and Ranging) operating at 15.0 kHz. The speed of
sound in sea water at the time of the reading is 1515 m/s. What is the speed of the
unkown object if the sonar receives an echo of 15.6 kHz.
Vg = 10 fo= 15000 Hz
%3D
10 m/s
V = 1515
%3D
Vo = ?
Transcribed Image Text:Champlain College Physics 203-NYC 8. You're gonna need a bigger boat... A boat moving eastward at 19.4 knots (10 m/s) is monitoring an approaching object using its sonar (SOund NAvigation and Ranging) operating at 15.0 kHz. The speed of sound in sea water at the time of the reading is 1515 m/s. What is the speed of the unkown object if the sonar receives an echo of 15.6 kHz. Vg = 10 fo= 15000 Hz %3D 10 m/s V = 1515 %3D Vo = ?
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