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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
FbwaterVobject 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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