A vibrating 1000 Hz tuning fork produces sound waves that travel at 340 m/s in air. Points A and...
Question:
A vibrating 1000 Hz tuning fork produces sound waves that travel at 340 m/s in air. Points A and B are some distance from the tuning fork. Point P is 20 meters from the tuning fork.
1) If the waves are in phase at point A and B, what is the minimum distance separating points A and B in terms of wavelength?
2) If the vibrating tuning fork is accelerated toward point P, what happens to the frequency of the sound observed at P?
Sound wave interference
In 1801 Thomas Young carried out an experiment that showed that light is a wave because it obtained an interference pattern. Today it is known as Young's double slit experiment, and its results can be extrapolated to any type of wave. In this experiment the angular position ({eq}\theta {/eq}) of the interference maxima is determined by the expression:
{eq}d\sin\theta=m\lambda {/eq}
where {eq}d {/eq} is the separation between the wave emitting sources, {eq}m {/eq} is the order of interference and {eq}\lambda {/eq} is the wavelength of the signal used.
Answer and Explanation: 1
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1)
If the sound waves are arriving in phase at points A and B simultaneously, it means that both are maximum intensity. The minimum separation...
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Interference Patterns of Sound Waves
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Chapter 19 / Lesson 5
557
Sound waves exist using different mediums, and when two waves use the same medium, they interact, known as interference. Explore the impact of sound waves from constructive interference, destructive interference, and two-point source interference.
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