# Question: water flows in a 50 mm pipe 100 m long...

###### Question details

Water flows in a 50 mm pipe, 100 m long, whose roughness is equal to 0.013 mm. If the pressure drop across this length of pipe is not exceed 50 kN/m2, what is the maximum allowable water velocity? The density and viscosity of water may be taken as 1000 kg/m3 and 1.0 mN-s/m2 respectively.