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Physics-Fluids
Topics and Equations for MCAT
20
Physics
Post-Graduate
06/28/2020

Additional Physics Flashcards

 


 

Cards

Term
Density Equation
Definition
ρ=m/v
Term
Density of Water
Definition
ρH2O=1 g/cm3 or 1000 kg/m3
Term
Specific Gravity Equation
Definition
SG=ρ/ρH2O
Term
Pressure Equation
Definition
P=F/A
Term
Pressure of Static Fluid
Definition
P=ρgz: where z is the depth of the object under pressure
Term
Absolute Pressure
Definition
P=Po+ρgz: where Po is the pressure at the surface
Term
Gauge Pressure Equation
Definition
Pgauge=(Po+ρgz)-Patm: where Po is the pressure at the surface and Patm is atmospheric pressure
Term
Buoyant Force Equation
Definition
Fb=ρwaterVobject submergedg
Term
Archimedes' Principle
Definition

The buoyant force is equal to the weight of the fluid displaced

Weightfluid displaced= ρgV

Term
Pascal's Principle
Definition
For an in-compressible fluid, change in pressure will be distributed undiminished to every portion of the fluid and walls
Term
Pressure in a Hydraulic System
Definition

P1=P2

F1/A1=F2/A2

Term
Volume in a Hydraulic System
Definition

V1=V2

A1d1=A2d2: where d is the displacement

Term
Work Done in a Hydraulic System
Definition

W=PV so

W=(F/A)(Ad)=Fd

W1=W2

F1d1=F2d2

Term
How far will an object sink in a fluid?
Definition

Weight of the fluid displaced (buoyant force) is less than the object's weight: Object will sink

Weight of the fluid displaced (buoyant force) is more than the object's weight: Object will float

 

Term
Cohesion
Definition
Attractive force between molecules of liquid
Term
Adhesion
Definition
Attractive force between molecules of liquid and another substance
Term
Meniscus
Definition
Adhesion > Cohesion
Term
Backwards Meniscus
Definition
Adhesion < Cohesion
Term
Continuity Equation
Definition

Fluids will flow quicker through small passages and slower through large passages

 

Q=v1A1=v2A2

Term
Bernoulli's Equation
Definition
P1+ρv21+ρgh1=P2+ρv22+ρgh2
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