A nozzle with a radius of 0.250 cm is attached to a garden hose with a radius of
0.900 cm. The flow rate through hose and nozzle is 0.500 L/s. The speed of water
in a hose increased from 1.96 m/s to 25.5 m/s going from the hose to the nozzle.
Calculate the pressure in the hose, given that the absolute pressure in the nozzle
is 1.0 × 105 N/m2 (atmospheric, as it must be) and assuming level, frictionless flow
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