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AP physics fluids formulas
Fluids and stuff
7
Physics
12th Grade
01/25/2009

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Term


 Density Formula

Definition

ρ = m / V

 

ρ = density (kg/m3)
Term
Pressure Formula
Definition

P = F / A

 

P = Pressure N / m2

F = Force N

A = Area m2

Term
Pressure due to the weight of a fluid
Definition

 P = ρ g h

 

Pabs = P atm + ρ g h

 

ρ = Density

abs = absolute pressure (atm + guage pressure)

atm = atmospheric pressure

 

Term
The buoyant force on an object equals _____
Definition

the weight of the fluid it displaces.

 

Weight of fluid = density x grav. accel x volume of the fluid

Term
Specific Gravity Formula
Definition

SG = ρ / ρ water

 

ρ = average density of the object

ρ water = density of water ( 1x 103 kg/m3 )

 

Term
Flow rate equation
Definition

F = A v

 

F = flow rate

A = Area of opening 

V = velocity

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