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!

Destructive Interference Question

  1. Apr 20, 2010 #1
    Light Question
    1. The problem statement, all variables and given/known data

    A student enters Best Buy prepared to buy a pair of speakers. Before he does so, he conducts an experiment with them. He places the speakers 4.0 m apart and connects a signal generator to both speakers that produces a single and consistent tone. (constant wavelength and frequency) He then walks to a point that is 2.0 m from one speaker and 2.3 m from the other. At that point he notices a quiet “spot”. If the speed of the sound in the room is known to be 350 m/s, calculate the possible frequencies being played by the speakers.

    2. Relevant equations



    3. The attempt at a solution

    I don't even know where to begin. I don't even know how to go from speed to frequency. Thanks for any and all help
     
  2. jcsd
  3. Apr 20, 2010 #2

    ideasrule

    User Avatar
    Homework Helper

    What's the condition for destructive interference?

    For a wave, speed, frequency, and wavelength are related by v=f*lambda.
     
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook




Similar Discussions: Destructive Interference Question
Loading...