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Suppose air, with a density of 1.29 kg/m3 is flowing into a Venturi meter. The narrow section of the pipe at point A has a diameter that is 1/3 of the diameter of the larger section of the pipe at point B. The U shaped tube is filled with water and the difference in height between the two sections of pipe is 1.98 cm. How fast is the air moving at point B?

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