Water is flowing in a pipe with a diameter of 0.25 m at a discharge of 0.2 /s. The temperature of the water is 25°C and the pipe is a 300-m-long section of wrought iron. (a) What is the head loss in...

Water is flowing in a pipe with a diameter of 0.25 m at a discharge of 0.2

/s. The temperature of the water is 25°C and the pipe is a 300-m-long section of wrought iron. (a) What is the head loss in this situation? (b) Can this pipe be considered smooth, rough, or neither?

A 0.3-m-diamerer pipe inclines at a slope of 10% and carries a discharge of 0.35

/s. Piezometers located along the pipe measure a hydraulic gradient of 0.125 m/m. The water temperature is 25°C. (a) What is the shear stress exerted on the boundary? (b) What is the shear velocity of this situation? (c) Compute the Darcy friction factor theoretically (without using the Darcy equation).