6. A horizontal pipe 7 cm in diameter has a smooth reduction to a pipe 4 cm in diameter. If the pressure of the water in the larger pipe is 6 x 104 Pa and the pressure in the smaller pipe is 4 x 104 Pa, at what rate does water flow through the pipes? 7. A Venturi tube may be used as a fluid flow meter. If the difference in pressure is P1 - P2 = 21.0 kPa, find the fluid flow rate in cubic meters per second, given that the radius of the outlet tube is 1.00 cm, the radius of the inlet tube is 2.00 cm, and the fluid is gasoline (density = 7 g/cm3). 8. A Pitot tube can be used to determine the velocity of air flow by measuring the difference between the total pressure and the static pressure (Fig. 1). If the fluid in the tube is mercury, (density = 13 600 kg/m3), and ∆h = 5.00 cm, find the speed of air flow. (Assume that the air is stagnant at point A, and take the density of air to be 1.25 kg/m3)

Question

6. A horizontal pipe 7 cm in diameter has a smooth reduction to a pipe 4 cm in diameter. If the pressure of the water in the larger pipe is 6 x 104 Pa and the pressure in the smaller pipe is 4 x 104 Pa, at what rate does water flow through the pipes?  7. A Venturi tube may be used as a fluid flow meter. If the difference in pressure is P1 - P2 = 21.0 kPa, find the fluid flow rate in cubic meters per second, given that the radius of the outlet tube is 1.00 cm, the radius of the inlet tube is 2.00 cm, and the fluid is gasoline (density = 7 g/cm3). 8. A Pitot tube can be used to determine the velocity of air flow by measuring the difference between the total pressure and the static pressure (Fig. 1). If the fluid in the tube is mercury, (density = 13 600 kg/m3), and ∆h = 5.00 cm, find the speed of air flow. (Assume that the air is stagnant at point A, and take the density of air to be 1.25 kg/m3)