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Earthquakes generate sound waves inside ...

Earthquakes generate sound waves inside the earth. Unlike a gas, the earth can experience both transverse (S) and longitudinal (P) sound wave. Typical the speed of S wave is about `4.0 kms^(-1)`, and that of P wave is `8.0km s^(-1)`. A seismograph records P and S waves from an earthquake. The first P wave arrives 4min before the first S wave. Assuming the waves travel in straight line, at what distance does the earthquake occur?

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1920 km
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NCERT GUJARATI-WAVES-Exercises
  1. A transverse harmonic wave on a string is described by y(x,t) = 3.0 si...

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  2. For the wave discribed in Exercise 15.8, plot the displacement (y) ver...

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  3. For the travelling harmonic wave y(x,t) = 2.0 cos 2 pi (10 t - 0.008...

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  4. The transverse displacement of a string (clamped at its both ends) is ...

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  5. (i) For the wave on a string described in Exercise 15.11. do all the p...

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  6. Given below are some functions of x and t to represent the displacemen...

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  7. A wave stretched between two rigid supports vibrate in its fundamental...

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  8. A metre - long tube open at one end, with a movalble piston at the oth...

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  9. A steel rod 100 cm lomg is clamped at its middle. The fundamental freq...

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  10. A pipe 20 cm long is closed at one end. Which harmonic mode of the pip...

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  11. Two sitar strings A and B playing the note 'Ga' are slightly out of tu...

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  12. Explain why (or how): (a) in a sound wave a displacement node is a p...

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  13. A train standing at the outer signal of a railway station blows a whis...

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  14. A train standing in a station-yard, blows a whistle of frequency 400Hz...

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  15. A travelling harmonic wave on a string is described by y(x,t) = 7.5 si...

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  16. A narrow sound pulse (for example, a short pip by a whistle) is sent a...

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  17. One end of a long string of linear mass density 8.0 xx 10^(-3) kg m^(-...

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  18. A SONAR system fixed in a submarine operates at a frequency 40.0kHz. A...

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  19. Earthquakes generate sound waves inside the earth. Unlike a gas, the e...

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  20. A bat is flitting about in a cave, navigating via ultrasonic beeps. As...

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