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Statement of a problem № 3547

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A pitot tube which is used to determine the speed of an aircraft relative to air is mounted on the wing of a plane. The tube contains alcohol of density 810 kg/m3 and registers a level difference of 15.0 cm. Assuming that the density of air at NTP is 1.293 kg/m3 , find the plane's speed in km/h relative to the air.

Solution:
A pitot tube which is used to determine the speed of an aircraft relative to air

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