Interesting Wave Problem

  • Thread starter bfr
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  • #1
bfr
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Homework Statement



phys.JPG


Homework Equations



wave velocity = frequency * wave length

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?
 

Answers and Replies

  • #2
Antenna Guy
303
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The width of the doorway (in wavelengths) should be important.

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

Regards,

Bill
 
  • #3
alphysicist
Homework Helper
2,238
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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?

Yes; the sound wave is passing through a wide slit, so this is a single-slit diffracion problem.
 

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