A fire hose has 100 mm diameter which reduces to a 20 mm nozzle discharging at 10+X m/s. (X= 0) Calculate the following:  a) How high the water can reach if the nozzle is aimed vertically? b) What is the pressure inside the hose? c) How much extra force will be created at the reducer due to velocity change?

A 200 m of rubber cotton lined hose having a diameter of 75 mm is attached to a hydrant at which pressure is 420 kPa during the flow. Assume the hose to be horizontal and f = 0.024 29. At what rate will the water be discharged trough the rubber cotton lined hose 30. If a 25 mm diameter nozzle is attached to the hose, what would be the expected head lost if a pressure of 500 kPa in the hydrant is maintained? Use Cv = C = 0.95 31. What is the discharge may be expected if the 25 mm nozzle is attached to the hose?

Q, nozzle.

Water at 50°F is pumped from a lake at 750 gpm through a length of 3-inch schedule 40 commercial steel pipe as shown below. The inlet to the pipe is eight feet below the surface of the lake. A 25-HP gasoline engine drives the pump and the pump has an efficiency of 80% What is the Reynolds number in the pipe? Is the flow laminar or turbulent? What is the head added to the water by the pump? What is the head loss due to pipe friction?