Question 6.1: Water flows through 1cm diameter pipe with a speed of 1 m/s. What should be the diameter of the nozzle if the water is to emerge at 2.1 m/s?

Question 6.2: Water is flowing smoothly through a closed pipe system. At one point of water is 3 m/s, while at another point 3m higher, the speed is 4.0m/s. At the lower point, the pressure is 80 kPa. Find the pressure at the upper point.

Question 6.3: An airplane wing is designed so that when the speed of the air across the top of the wing is 450 m/s, the speed of the air below the wing is 410 m/s. What is the pressure difference between the top and bottom of the wings?

Question 6.4: Water flows through a pipe whose internal diameter is 2cm at a speed of 1m/s. What should be the diameter of the nozzle if the water is to emerge at a speed of 4m/s.

Question 6.5: Eight equal drops of oil are falling through air with a steady velocity of 0.1 m/s. If the drops recombine to form a single drop, what should be the new terminal velocity?

Question 6.6: Calculate the speed of efflux of kerosene oil from a narrow hole of a tank, in which pressure is 4 atm. Density of kerosene oil is 0.72g/cm^-3. (one atmospheric = 1.03 x 10^5 Pa).

Question 6.7: A small sphere of volume V falling in a viscous medium, acquires a terminal velocity vt. What will be the terminal velocity of a sphere of same material and volume 8V, falling through the same medium?

Question 6.8: Determine the radius of a water drop falling through air with a terminal velocity of 0.012 m/s. Viscosity of air= 0.019×10^-3 N s m^-2 Density of air=1.29 kg m^-3 Density of water =1.0×10^3 kg m^-3