A fire hose nozzle has a diameter of 4 in, as shown in Figure P5. 19. According to the fire code set by the state, the nozzle should be able to deliver 1000 gal/min. If the nozzle is connected to a...

A fire hose nozzle has a diameter of 4 in, as shown in Figure P5. 19. According to the fire code set by the state, the nozzle should be able to deliver 1000 gal/min. If the nozzle is connected to a IO-in-diameter hose, what pressure head must be maintained just upstream of the nozzle?