In an experimenmt to determine the speed of sound, two observers, A and B, were stationed 5.00 km apart. Each was equipped with gun and stopwatch. Observer A heard the report of B's gun 15.5 s after seeing its flash. Later, A fired his gun and B heard the report 14.5 s after sccing the flash. Determine the speed of sound and the component of the speed of the wind along the line joining A to B. Ans.
In an experimenmt to determine the speed of sound, two observers, A and B, were stationed 5.00 km apart. Each was equipped with gun and stopwatch. Observer A heard the report of B's gun 15.5 s after seeing its flash. Later, A fired his gun and B heard the report 14.5 s after sccing the flash. Determine the speed of sound and the component of the speed of the wind along the line joining A to B. Ans.
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Transcribed Image Text:In an experiment to determine the speed of sound, two observers, A and B, were stationed 5.00 km apart.
Each was equipped with gun and stopwatch. Observer A heard the report of B's gun 15.5 s after seeing
its flash. Later, A fired his gun and B heard the report 14.5 s after secing the flash. Determine the speed
of sound and the component of the speed of the wind along the line joining A to B.
Ans.
A disk has 40 holes around its circumference and is rotating at 1200 rpm. Determine the frequency and
wavelength of the tone produccd by the disk when a jet of air is blown against it. The temperature is
15°C.
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