The Picture Below Shows A Line Of 4 Firefighters Holding A Hose While Trying To Extinguish A Fire If The Nozzle Exit Di 1 (28.02 KiB) Viewed 37 times
The Picture Below Shows A Line Of 4 Firefighters Holding A Hose While Trying To Extinguish A Fire If The Nozzle Exit Di 2 (26.07 KiB) Viewed 37 times
The Picture Below Shows A Line Of 4 Firefighters Holding A Hose While Trying To Extinguish A Fire If The Nozzle Exit Di 3 (19.69 KiB) Viewed 37 times
The picture below shows a line of 4 firefighters holding a hose while trying to extinguish a fire. If the nozzle exit diameter is X cm and the water flow rate is Y determine m min' (a) the average water exit velocity marks 10 (b) the horizontal resistance force required of the firefighters to hold the nozzle. Marks 10 (c) If a single fire fighter can hold 70 kgf. What is the maximum volumetric flow rate that the fight fighter can use? Marks 15
Hint: B =1 and notice the arrows showing the direction of the flow in and out of the control volume.
Given the values of y (flow rate) = 18 ml mio ที่ X (B1) 11.0cm X
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