Pressure And Fluid Pressure SS.3 Flashcards
(27 cards)
Density
M/v kg/m^3
Water density
1000 kg/m^3
Hydrogen density
Lowest density
Platinum density
Highest density
Relative density
The ratio of an object’s density to the density of water, it’s unit less
Hydrometer
An instrument to measure relative density of liquids
Solid pressure
Magnitude of a force acting on a given area
Evangelista torricelli
Developer of first device to measure atmospheric pressure
Barometer
A device for measuring atmospheric pressure
Hydrostatics
Branch of fluid mechanics that studies fluids at rest
Fluid
Is a substance that can flow
Fluid pressure
Results from collision of particles
Buoyant force
An upward force that is applied by a fluid that opposes the weight of partially or completely submerged object
Buoyancy
The ability or tendency to float
Archimede’s principle
An object that is completely or partially submerged in a fluid experiences an upward buoyant force that is equal to the weight of the fluid displaced
Pascal’s law
An external pressure applied to an enclosed fluid is transmitted uniformly through the volume of the fluid
Hydrostatic pressure
P=energy/volume
Bernoulli principle
The faster the non viscous fluid move the less pressure it experts(spend)
Brenoulli equation
Considered to be a statement of conservation of energy
Continuity equation
A1V1=A2V2
Uniform flow
The velocity at a given instant of time is same in both magnitude and direction at all points in the flow
Non uniform flow
When the velocity changes from point to point in a flow at any given instant of time
Converging flow speed
Non uniform flow , magnitude changes
Vortex flow speed
Non uniform flow direction changes
