Be Clear and Answer each part properly. The Venturi meter is used to measure the

Question

Be Clear and Answer each part properly.

The Venturi meter is used to measure the speed of air (density rho_a) and is shown in the figure below. It consists of a horizontal pipe with variable sectional areas, and a flexible hose, partially filled with water (density rho_w), connecting two points in the pipe with different areas. Air enters the meter at speed nu_1 and atmospheric pressure p_o. The sectional area of the meter is A_1 at point 1 and A_2 at point 2. a) What is the speed of the air at point 2? b) What is the pressure of the air at point 2? c) What is the value of h, the difference between the water levels at 3 and 4? d) If the speed nu_1 doubles, how much bigger (or smaller) does h become?

Explanation / Answer

The answer of following question is as follows.

The speed of air at point 2 is 45m/sec .

The value of h is 6mm.

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