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A steel pipe with length L has bulk modulus 1.6×1011 N/m2 and density 7860 kg/m3 ....

A steel pipe with length L has bulk modulus 1.6×1011 N/m2 and density 7860 kg/m3 . One end of the pipe is dealt a sharp blow with a hammer. A listener at the other end of the pipe hears two sounds: one from the wave traveling along the pipe and one from the wave traveling through the air. Find the length of the pipe, if the time interval between the two sounds is 1.45 s. Take the speed of sound in air to be 343 m/s

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