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A stone is dropped from the top of a tow...

A stone is dropped from the top of a tower 500 m high into a pond of water at the base of the tower. When is the splash heard at the top? Given, g= `10 m s^-1` and speed of sound = `340 m s^-1`.

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R G PUBLICATION-SOUND-EXAMPLE
  1. When a sound is reflected from a distant object, an echo is produced. ...

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  2. Give two practical applications of reflection of sound waves.

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  3. A stone is dropped from the top of a tower 500 m high into a pond of w...

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  4. A sound wave travels at a speed of 339 m s^-1. If its wavelength is 1....

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  5. What is reverberation? How can it be reduced?

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  6. What is loudness of sound? What factors does it depend on?

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  7. Explain how bats use ultrasound to catch a prey.

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  8. How is ultrasound used for cleaning?

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  9. Explain how defects in a metal block can be detected using ultrasound.

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  10. A sonar device on a submarine sends out a signal and receives an echo ...

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  11. Explain how defects in a metal block can be detected using ultrasound.

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  12. Explain how the human ear works.

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  19. The relation between frequency (upsilon) and time period (T) is

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