018 10.0 points A fireman standing on a 14 m high ladder
operates a water hose with a round nozzle of
diameter 2.13 inch. The lower end of the hose
(14 m below the nozzle) is connected to the
pump outlet of diameter 3.15 inch. The gauge
pressure of the water at the pump is
(abs)
= 57.3 PSI = 395.07 kPa.
Calculate the speed of the water jet emerg-
ing from the nozzle. Assume that water is an
incompressible liquid of density 1000 kg/m
3
and negligible viscosity. The acceleration of
gravity is 9.8 m/s2
Answer in units of m/s