8. Explain the working principle of a Venturi meter State three applications of Venturi meter Mention two applications of Bernoulli's principle. The pulmonary artery, which connects the heart to the lungs has an inner radius of 2.6 mm and is 8.5 cm long. If the pressure drop between the heart and the lungs is 3x10³ Nm-², what is the average speed of blood in the pulmonary artery. Determine volume flow rate of blood. Assume body temperature of 37° C, and the coefficient of viscosity of blood = 4.0x10-3Nm -2 at 37°C.