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forces in fluids
froces in fluids
9
Science
8th Grade
04/09/2006

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Term
pressure
Definition
the force exerted on a surface divided by the total area over which the force is exerted
Term
pascal
Definition
a unit of pressure equal to one newton per squar meter
Term
fluid
Definition
a substance that can easily change shape
Term
Pacal's principle
Definition
the rule that when force is applied to a confined fluid, the increase in pressure is transmitted equally to all parts of the fluid
Term
hydrolic system
Definition
a system that multipies force by transmitting pressure from a small surface area through a confined fluid to a larger surface area
Term
buoyant force
Definition
the upward force exerted by a fluid on a submerged object
Term
Archimedes' principle
Definition
the rule that buoyant force on an object is equal to the weight of the fluid diplaced by that object
Term
density
Definition
the mass of a substance contained in a uint of volume
Term
Bernoulli's principle
Definition
the rule that a stream of fast-moving fluid exerts less pressure than the surrounding fluid
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