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Velocity of submarine

  1. Nov 27, 2014 #1
    1. The problem statement, all variables and given/known data
    A seal sees a shark 53.0 m away and lets out a
    squeal. If the speed of sound through sea water
    is 1533 m/s, how long will it take for the echo
    of the squeal to return to the seal?

    2. Relevant equations


    3. The attempt at a solution
    i used the doppler effect formula and got 0.99m/s but it isnt the right answer
     
  2. jcsd
  3. Nov 27, 2014 #2

    haruspex

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    Doppler effect? What, apart from sound waves, is moving?
    The question asks for a time, not a speed.
    What is the sound echoing off?

    I note the title mentions a submarine. Have you posted the text for the wrong question?
     
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