fluid study Flashcards
what is particle theory
all matter is made up of particles
do a positive scientific notation
did you actually
do a negative scientific notation
do it
how to calculate density
mass / volume = density
why isnt sand (eg) a fluid?
because it is made up of tiny solids that are small enough to fit into a container
whats aerodynamics?
the way objects move through air
why does a car with a spoiler have worse aerodynamics than without?
because the spoiler interrupts the movement of the circulating air
whats hydrodynamics?
how objects move through water
what’s scientific debit
the flow rate of a fluid
what’s viscosity
the way/ability of how a fluid flows
what’s large visco, give an example of a fluid
a fluid with a large force of particle attraction
what’s small visco, give an example of a fluid
a fluid with a small force of particle attraction
what’s a fluid
a form of matter that continuously flows under an applied shear stress, or external force.
what’s the Archimedes principal
when a weight is pushed through a fluid, and the weight pushed down is brought back up by the fluid.
what’s the weight pushed up called in the Archimedes principal
buoyant force
what’s positive floatation, eg
object that rests on the surface of a fluid. eg: leaf
what’s neutral floatation, eg
object that rests in between surface and fluid. eg: boat
what’s negative floatation, eg
object that moves straight through a fluid. eg: dumbell
what happens when a fluid is under pressure
it becomes more compact and their volume decreases, as well as the particles collide and becomes more compact
what matter is more compressible than others
gas
what if the temperature increases to a fluid
the particles become faster and more spaced out
pressure formula
force / surface
explain the type of force and surface in the pressure formula
the force is gravitational force by newton, and the surface is surface in m squared
what are pascals
units of weight or pressure
what do 1000 pascals equal
1 kilo pascal
what’s pascals law
if we increase the pressure of an enclosed fluid, the pressure is scattered all around the enclosement.
what is hydraulics, give an example
a machine operated by liquids, washing machine
what is pneumatic, give an example
a machine operated by air pressure, bike tire
how close are particles in liquids
they’re neutral, and somewhat spacious. the force is not too strong
how close are particles in gas
they’re very spaced out, and all over the place. there’s barely a force of attarction
how close are particles in solids
they’re very compact. the force of attraction is very strong.
