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Sound Propagation

17. Two men s...

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17. Two men stand a certain distance apart beside a long metal fence on a still day ;one man places his ear against the fence while the other gives the fence a sharp knock with a hammer . two sounds separated by a time interval of 0.5s are heard by the 1st man . if the velocity of sound in air is 330 m/s & in the metal is 5280m/s . how far apart are the men?

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