Water flows through a horizontal pipe at a rate of 0.01 m /s. The pipe consists of two sections of diameters 5 cm and 2 cm with a smooth reducing section. The pressure difference between the two pipe sections is measured by a fluid manometer that has S=12.9. Neglecting the viscous effects, determine the differential height of fluid manometer h (m) between the two pipe sections.

If the difference between the total pressure and static pressure in an air duct is measured by a pitot tube to be 6.5 cm H2O, what is the flow velocity in m/s? Density of water is 998 kg/m3, and g = 9.81 m/s2. 3 signififcant figures answer

Can you help me to solve this problem? Water is siphoned from the tank shown on the Figure below. Assuming frictionless flow, determine the mass flowrate from the tank in kg/s to 2 decimal places. Take atmospheric pressure and density of water 105 Pa to be 1000 kg/m3, respectively.  Gravitational acceleration is 9.81 m/s2

Water at 15 degrees Celsius is flowing through a 2-in ID smooth pipe. The friction loss for a 100-ft section of the pipe amounts to 4.8 lbf/lbm. Determine the velocity of the flow.