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A whistle emitting a sound of frequency `440 Hz` is tied to a string of `1.5 m` length and roated with an angular velocity of `20 rad//s` in the horizontal plane. Calculate the range of frequencies heard by an observer stationed at a larger distance from the whistle .(Speed of sound =`330 m//s)` .

Text Solution

Verified by Experts

`v_S=romega=1.5xx20=30(m)/(s)`
`n_(min)=(v)/(v+v_S)n=(330)/(330+30)xx440Hz=403Hz`
`n_(max)=(330)/(330-30)xx440=484Hz`
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CENGAGE PHYSICS ENGLISH-SOUND WAVES AND DOPPLER EFFECT-Exercise 6.2
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  2. The ratio of the apparent frequencies of a car when approaching and re...

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  3. A whistle emitting a sound of frequency 440 Hz is tied to a string of ...

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  4. A siren emitting a sound of frequency 2000 Hz moves away from you towa...

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  5. A railroad train is travelling at 30 m/s in still air. The frequency o...

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  6. Two tuning forks A and B having a frequency of 500 Hz each are placed ...

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  7. A person riding on a merry go round emits a sound wave of a certain fr...

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  8. Does the Doppler effect increase the intensity of wave when its source...

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  9. The Doppler effect is a wave characteristic. Light and sound are both ...

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  10. Is there a Doppler effect in the case of sound when the observer or th...

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  11. A source moves away from an obeserver with a certain speed, and the ra...

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  12. An engine blowing a whistle of frequency 133 Hz moves with a velocity ...

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  13. A source emits sound waves of frequency 1000 H(Z). The source moves to...

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  14. A stationary source emits sound of frequency upsilon=1200Hz. If a wi...

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  15. A stationary observer receives sonic oscillations from two tuning for...

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  16. A stationary source sends forth monochromatic sound. A wall approaches...

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  17. A source of sonic oscillations with frequency v(0)=100Hz moves at righ...

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  18. A whistle of frequency 540 Hz rotates in a horizontal circle of radius...

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  19. A bat flies perpendicularly towards a wall with a speed of 6 m/s, emit...

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  20. The ratio of the apparent frequencies of a car when approaching and re...

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