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: Interesting Wave Problem

  1. May 10, 2008 #1

    bfr

    User Avatar

    1. The problem statement, all variables and given/known data

    phys.JPG

    2. Relevant equations

    wave velocity = frequency * wave length

    3. The attempt at a solution

    Well...I'm not sure. I know how you could find the distance to the person to the right using trigonometric, but I don't know how to actually answer the question (mathematically). Interference might have something to do with it?
     
  2. jcsd
  3. May 10, 2008 #2
    The width of the doorway (in wavelengths) should be important.

    Consider having one whistle, and two echos (one from each side).

    Regards,

    Bill
     
  4. May 10, 2008 #3

    alphysicist

    User Avatar
    Homework Helper

    Yes; the sound wave is passing through a wide slit, so this is a single-slit diffracion problem.
     
Share this great discussion with others via Reddit, Google+, Twitter, or Facebook