BP-11 A tank of water has a spout located 13.5 cm below the water line. The tank is sealed and the pressure of the air above the water in the tank is kept at 4.65 atm. The diameter of the spout is 0.250 cm, which is very small compared to the diameter of the tank. Assume that the pressure of the air outside of the tank is exactly 1.00 atm. (a) If the spout is opened, at what speed (in units of m/s) does the water come out? Hint: you'll need to use both Bernoulli's equation and the equation of continuity. (b) What is the volume flow rate of the water coming out of the tank, in units of cm3/s? (c) At this rate, how long would it take to fill up a water bottle with a volume of 1.00 liter?
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.
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