1. Apr 20, 2008 #1

   qustudent88

   

   1. The problem statement, all variables and given/known data
   
   A train whistle sounds. As the train approaches, a stationary observer near the track hears the whistle at a frequency of 500 hertz. As the train recedes the observer hears the whistle at a frequency of 450 hertz. what is the speed of the train? v (sound) = 343 m/s
   
   2. Relevant equations
   
   Fa = f/(1-v(train)/Vs(Sound))
   Fr = f/(1+v(train)/Vs(Sound))
   
   3. The attempt at a solution
   
   Vtrain = 18.05

    

   qustudent88, Apr 20, 2008
2. 
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3. Apr 21, 2008 #2

   astrorob

   

   I concur.

    

   astrorob, Apr 21, 2008

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