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Explain: if an observer places his ear t...

Explain: if an observer places his ear to one end of a long iron pipe line, he can distinctly hear two sounds when a man hammers the other end of the pipeline.

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Sound travels faster in iron that in air. So there is a difference between the times taken by sound to travel through iron and sir. This is why the observer hears two sounds.
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CENGAGE PHYSICS-SOUND WAVES AND DOPPLER EFFECT-Exercise 6.1
  1. Explain why the speed of sound through a gas cannot be greater than th...

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  2. Sound is more clearly heard with the wind How?

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  3. Explain: if an observer places his ear to one end of a long iron pipe ...

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  4. Does the velocity of sound in a solid increase significantly on heatin...

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  5. A man stands on the ground at a fixed distance from a siren which emit...

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  6. Two sound waves from two different sources interfere at a point to yie...

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  7. A sound differs by 6 dB from a sound of intensity equal to 10(nW)/(cm^...

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  8. Find the molecular weight for a gas in which the velocity of sound is ...

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  9. Seven grams of nitrogen is mixed with 12 g of oxygen in a tube and the...

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  10. Calculate the increase velocity of sound for 1^@C rise of temperature ...

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  11. If the sound level in a room is increased from 50 dB to 60 dB, by what...

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  12. Do displacement, particle velocity and pressure variation in a longitu...

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  13. Why is sound wave of intensity 10^-12(W)/(m^2) and frequency 1000 Hz t...

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  14. What experimental evidence can be cited to show that the speed of soun...

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  15. Explain why the speed of sound through a gas cannot be greater than th...

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  16. Sound is more clearly heard with the wind How?

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  17. Explain: if an observer places his ear to one end of a long iron pipe ...

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  18. Does the velocity of sound in a solid increase significantly on heatin...

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  19. A man stands on the ground at a fixed distance from a siren which emit...

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  20. Two sound waves from two different sources interfere at a point to yie...

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