The drinking water needs of an office are met by large water bottles. One end of a 0.25-in-diameter plastic hose is inserted into the bottle placed on a high stand, while the other end with an on/off valve is maintained 2 ft below the bottom of the bottle. If the water level in the bottle is 1.5 ft when it is full, determine how long it will take at the minimum to fill an 8-oz glass (= 0.00835 ft3) (a) when the bottle is first opened and (b) when the bottle is almost empty. Neglect frictional losses.
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.
The drinking water needs of an office are met by
large water bottles. One end of a 0.25-in-diameter plastic
hose is inserted into the bottle placed on a high stand, while
the other end with an on/off valve is maintained 2 ft below the bottom of the bottle. If the water level in the bottle is
1.5 ft when it is full, determine how long it will take at the
minimum to fill an 8-oz glass (= 0.00835 ft3) (a) when the
bottle is first opened and (b) when the bottle is almost empty.
Neglect frictional losses.
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