Physics

posted by .

Imagine you are in an open field where two loudspeakers are set up and connected to the same amplifier so that they emit sound waves in phase at 688 Hz. Take the speed of sound in air to be 344 m/s.

If you are 3.00 m from speaker A directly to your right and 3.50 m from speaker B directly to your left, will the sound that you hear be louder than the sound you would hear if only one speaker were in use?

What is the shortest distance (d) you need to walk forward to be at a point where you cannot hear the speakers?

  • Physics -

    wavelength=344/688=.5 m
    you are from A 7 wavelengths,and from B6 wavlengths. So the sound is inphase from both sources.

    To be at a null, the distance has to be 1/2 wavlength (.25 meters) out of sync.

    I would move .125meters either way.

    I am not exactly certain what "forward" means in the last sentence.

Respond to this Question

First Name
School Subject
Your Answer

Similar Questions

  1. physics

    Two loudspeakers emit sound waves along the x-axis. The sound has maximum intensity when the speakers are 14.0 cm apart. The sound intensity decreases as the distance between the speakers is increased, reaching zero at a separation …
  2. physics

    Two loudspeakers emit sound waves along the x-axis. The sound has maximum intensity when the speakers are 14.0 cm apart. The sound intensity decreases as the distance between the speakers is increased, reaching zero at a separation …
  3. physics

    Two loudspeakers emit sound waves along the x-axis. The sound has maximum intensity when the speakers are 14.0 cm apart. The sound intensity decreases as the distance between the speakers is increased, reaching zero at a separation …
  4. physics

    Two loudspeakers in a 20°C room emit 629 Hz sound waves along the x-axis. (a) If the speakers are in phase, what is the smallest distance between the speakers for which the interference of the sound waves is destructive?
  5. physics help

    Imagine you are in an open field where two loudspeakers are set up and connected to the same amplifier so that they emit sound waves in phase at 688 Hz. Take the speed of sound in air to be 344 m/s. If you are 3.00m from speaker A …
  6. Two Loudspeakers in a open field Pjysics

    Imagine you are in an open field where two loudspeakers are set up and connected to the same amplifier so that they emit sound waves in phase at 688 Hz. Take the speed of sound in air to be 344 m/s. If you are 3.00m from speaker A …
  7. physics

    Two loudspeakers, A and B, are driven by the same amplifier and emit sinusoidal waves in phase. The frequency of the waves emitted by each speaker is 172 \rm Hz. You are 8.00 \rm m from speaker A. Take the speed of sound in air to …
  8. physics

    A college student is at a concert and really wants to hear the music, so she sits between two in-phase loudspeakers, which point toward each other and are 60.8 m apart. The speakers emit sound at a frequency of 428.75 Hz. At the midpoint …
  9. physics

    A college student is at a concert and really wants to hear the music, so she sits between two in-phase loudspeakers, which point toward each other and are 60.8 m apart. The speakers emit sound at a frequency of 428.75 Hz. At the midpoint …
  10. physics

    A college student is at a concert and really wants to hear the music, so she sits between two in-phase loudspeakers, which point toward each other and are 60.8 m apart. The speakers emit sound at a frequency of 428.75 Hz. At the midpoint …

More Similar Questions