1. Limited time only! Sign up for a free 30min personal tutor trial with Chegg Tutors
    Dismiss Notice
Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

Homework Help: Problem about Doppler effect

  1. May 7, 2010 #1
    1. The problem statement, all variables and given/known data
    a train moves with uniform velocity . its horn is with a definite frequency . then if the frequency that a man in the station had heard is changed from 5400 Hz to 4500 Hz . calculate :-
    1- velocity of train.
    2- the real frequency of the source .
    let the velocity of sound in air = 330 m/s .


    2. Relevant equations



    3. The attempt at a solution
    f'/f = v/(v+vs)
    vs = velocity of train = 63 m/s .
    is that solution is true ?
    and i can't solve or understand the second item of my problem .
    please i want a help .
     
  2. jcsd
Share this great discussion with others via Reddit, Google+, Twitter, or Facebook

Can you offer guidance or do you also need help?
Draft saved Draft deleted