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25 Cards in this Set

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  • Back
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What principle is used on a sprayer
Bernoulli
starts with a B
According to ______principle,as the speed of a fluid increases, the pressure within the fluid decreases
Bernoulli
starts with a B
airplane term that refers to when an airplane turns left or right
yaw
way backwards
when a plane tilts back to front
pitch
what does a pitcher do
when a plane has one wing tilting up and the other down
roll
you _______ on a river
the ablility of a fluid to exert an upward force on an object placed on it
buoyancy
bouy???
______-results in the apparent loss of weight of an object in a fluid
Buoyancy
upward force which acts in the opposite direction of gravity
buoyancy force
BF
______principle: the buoyant force on an object is equal to the weight of the fluid displaced by an object
Archimedes
A
density of water
1g/cm cubed
If an object is less dense than the fluid it is in, it will ____. If the object is more dense than the fluid it is in, it will ______.
float & sink
The engine produces _____which pushes the plane forward.
thrust
______is opposed by drag(air resistence) which increases with the airplane's speed.THe thrust must create enough speed to generate lift
thrust
______ the upward force on the airplane caused by movement of its wings through the air. For the plane to become airborne, the lift must exceed the plane's weight
Lift
_______ ________ to rise again, the submarine's weight must be decreased. Air is pumped into the ballast tanks to force the water out. The buoyant force acting on the submarine now exceeds the submarine's weight.
positive buoyancy
PB
______ ________once the submarine's ballast tanks hold enough water for the submarine's weight to equal the buoyant force, the submarine is said to have neutral buoyancy. It now has no tendency to rise or sink.
Neutral buoyancy
NB
______ ________ As long as it remains submerged, a submarine experiences a constant buoyant force. To overcome the buoyant force so the submarine can dive-that is, to achieve negatively buoyancy-its weight must increase. This is done by flooding the ballast tanks, replacing air with water.
Negative buoyancy
NeB
According to______'s principle, the buoyant force on an object is equal to the weight of the fluid displaced by the object. Whereas the weight of an object acts downward, the buoyant force acts upward.
Archimedes
starts with an A
According to ______'s principle,a change in pressure at any point in a fluid is transmitted equally and unchanged in all directions throughout the fluid.
Pascals
starts with a P
device that uses pressurized fluid acting on pistons of different sizes to change a force.
hydraulic system
HS
In a ____ _____ ____, an increased output force is produced because a ____ fluid pressure is exerted on the larger area of the output piston.
hydraulic lift system /constant
_____ ______ decreases as the altitude increases.
Air Pressure
P=F/A
pressure equals force divided by area
result of a force distributed over an area
pressure
SI unit of pressure
pascal