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  1. AP Physics 2
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How do you calculate total pressure?

  1. Calculate gauge pressure: Pgauge=ρghP_{gauge} = \rho ghPgauge​=ρgh. 2. Determine atmospheric pressure (PatmP_{atm}Patm​, usually 1 atm). 3. Add them: Ptotal=Pgauge+PatmP_{total} = P_{gauge} + P_{atm}Ptotal​=Pgauge​+Patm​.
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How do you calculate total pressure?

  1. Calculate gauge pressure: Pgauge=ρghP_{gauge} = \rho ghPgauge​=ρgh. 2. Determine atmospheric pressure (PatmP_{atm}Patm​, usually 1 atm). 3. Add them: Ptotal=Pgauge+PatmP_{total} = P_{gauge} + P_{atm}Ptotal​=Pgauge​+Patm​.

How do you calculate hydrostatic pressure?

  1. Identify the fluid density (ρ\rhoρ). 2. Determine the depth (hhh) from the surface. 3. Use the formula: P=ρghP = \rho ghP=ρgh.

What is the difference between gauge pressure and absolute pressure?

Gauge Pressure: Pressure relative to atmospheric pressure. Absolute Pressure: Total pressure, including atmospheric pressure.

Compare and contrast hydrostatic pressure and dynamic pressure.

Hydrostatic Pressure: Pressure due to the weight of a fluid at rest. Dynamic Pressure: Pressure due to the motion of a fluid.

Define pressure.

Pressure is the force distributed over an area; the ratio of force to perpendicular area.

What is hydrostatic pressure?

Pressure exerted by a fluid on a submerged object, due to the weight of the fluid above it.

Define gauge pressure.

The pressure due to the fluid itself (ρgh\rho ghρgh).

What is absolute pressure?

The sum of gauge pressure and atmospheric pressure.

State Pascal's Principle.

Pressure applied to a confined fluid is transmitted equally in all directions.

Define dynamic pressure.

The pressure due to the fluid's motion, given by 12ρv2\frac{1}{2} \rho v^221​ρv2.