Fire hoses used in major structure fires have inside diametersof 2.500 in (1 in = 2.54 cm). The nozzle of the fire hose have aninside diameter of 1.200 in. When firefighters are fighting a fire2020.007 cm above the ground, the pressure in the nozzle is lessthan at ground level. When measured, the gauge pressure in thenozzle is 0.000 Pa.
(a) How are the firefighters able to fight a fire with zerowater pressure? Explain your answer.
(b) What is the value of the water pressure as it emerges intothe air from the nozzle? Explain your answer.
