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  1.  
    2. please say the answer before 17/11/14. before 9.00 pm.got exam tomorrow
    10 years ago by aswin gawtham

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  2.  
    3. A man standing in front of an vertical cliff fires a gun.he hears the echo after 3 seconds.on moving closer to the cliff by 82.5metere ,he fires and hears an echo after 2.5 seconds.find 1}distance of the cliff from the initial position of man 2}speed of sound . with the steps
    10 years ago by aswin gawtham

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  3.  
    4. what is an transverse wave?
    10 years ago by aswin gawtham

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  4.  
    5. speed of sound wave is 330m/s .what is the wavelength ,whose frequency is 550hz?
    10 years ago by aswin gawtham

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  5.  
    6. what is sonar?state the principle on which it is based
    10 years ago by aswin gawtham
    Ans 1 ->
    To understand about sonar in detail... visit the link http://thusithamabotuwana.files.wordpress.com/2013/01/principles_and_applications_of_sonar.pdf
    10 years ago by Physics Galaxy

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  6.  
    7. what is the formula for echo?
    10 years ago by aswin gawtham
    Ans 1 ->
    2d/t
    10 years ago by aswin gawtham

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  7.  
    8. what is the formula to calculate speed of a sound wave
    10 years ago by aswin gawtham
    Ans 1 ->
    Pl watch Module-16 of 'Wave Motion' Topic under section 'Oscillation & Waves' in video lectures for the formula of speed of sound wave...
    10 years ago by Physics Galaxy

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