Basics Flashcards
Density=mass / volume
Kgm^-3
Momentum= mass * velocity
Kgms^-1
Force= mass * acceleration
Kgms^-2
Pressure=force / area
Kgm^-1 s^-2
Energy=force * distance
Kgm^2 s^-2
Power = work / time
Kgm^2 s^-3
Electric charge= charge * time
As
Potential difference= energy / charge
Kgm^2 A^-1 s^-3
Resistance =potential difference / current
Kgm^2 A^-2 s^-3
Distance (v or s)
Scaler
Displacement (v or s)
Vector
Speed (v or s)
Scaler
Velocity (v or s)
Vector
Mass (v or s)
Scaler
Weight (v or s)
Vector
Pressure (v or s)
Scaler
Force (v or s)
Vector
Energy (v or s)
Scaler
Momentum (v or s)
Vector
Temp (v or s)
Scaler
Acceleration (v or s)
Vector
Volume (v or s)
Scaler
Electric current (v or s)
Vector
Density (v or s)
Scaler
Torque/moment (v or s)
Vector
Laminar flow
~layers move steady without mixing
Turbulent flow
~layers overlap
~Eddie currents
Stokes law
Viscous drag = 6 [pie] [mu] [r] [v]
Mu=viscosity of fluid
R=radius of sphere
V=velocity of the sphere relative to the fluid
What does stokes law assume
~It assumes that the fluid is uniform throughout and that the flow is laminar
~Therefore only travels at low speeds
~Small…
~Spherical object
Upthrust definition
The weight of fluid displaced
Upthrust equation
Volume * density
