A nozzle with a radius rn = 0.250 cm is attached to a garden hose with a radius of rh = 0.900 cm. The flow rate through hose and nozzle is Q = 0.500 L/s (a) Calculate the speed (in SI units) of the water (i) in the hose and (ii) in the nozzle. (b) Calculate the pressure in the hose, given that the absolute pressure in the nozzle is 1.01 x 105 N/m2 (atmospheric, as it must be) and assuming level, frictionless flow.
Fluid Pressure
The term fluid pressure is coined as, the measurement of the force per unit area of a given surface of a closed container. It is a branch of physics that helps to study the properties of fluid under various conditions of force.
Gauge Pressure
Pressure is the physical force acting per unit area on a body; the applied force is perpendicular to the surface of the object per unit area. The air around us at sea level exerts a pressure (atmospheric pressure) of about 14.7 psi but this doesn’t seem to bother anyone as the bodily fluids are constantly pushing outwards with the same force but if one swims down into the ocean a few feet below the surface one can notice the difference, there is increased pressure on the eardrum, this is due to an increase in hydrostatic pressure.
A nozzle with a radius rn = 0.250 cm is attached to a garden hose with a radius of rh = 0.900 cm. The flow rate through hose and nozzle is Q = 0.500 L/s
(a) Calculate the speed (in SI units) of the water (i) in the hose and (ii) in the nozzle.
(b) Calculate the pressure in the hose, given that the absolute pressure in the nozzle is 1.01 x 105 N/m2 (atmospheric, as it must be) and assuming level, frictionless flow.
Trending now
This is a popular solution!
Step by step
Solved in 2 steps
