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4 cards from this section. Quick, good the night before a test.
What is a control volume?
Think about where we take measurements in fluid mechanics.
How does pressure relate to gravity in a fluid?
Consider the weight of a column of fluid.
What defines a control volume?
Consider its purpose in fluid dynamics.
True or False: Gauge pressure is always higher than absolute pressure.
What happens if we are below atmospheric pressure?
If a fluid has a density of 1000 kg/m³ and is 10 meters deep in a tank, calculate the pressure at the bottom of the tank assuming atmospheric pressure is 101325 Pa.
Use hydrostatic pressure equation, remember to include atmospheric pressure.
In a control volume where the pressure is given as a function of height, derive the expression for pressure gradient based on gravitational forces acting on the fluid.
Consider the effects of height variations on pressure.
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