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Glossary of physical science chp. 15

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hydraulic machines
machines which use fluid to transmit or increase force
fluid mechanics
The study of fluid movement and forces
Bernoulli's principle
States that the pressure of a fluid decreases as its speed increases
fluids
liquid or gas phases of matter
Boyle's law
the volume of a dry gas is inversely proportional to the pressure it exerts, if the temperature remains constant
pressure
the force pushingdirectly on a given surface
Archimedes' principle
the buoyant force exerted on a body in a fluid is equal to the weight of the fluid displaced
pascal (Pa)
unit of pressure equal to one newton of force over a square meter (NN/m(2))
Pascal's principle
changes in pressure in a confined fluid are distributed equally in all directions throughout the fluid
Charles's law
the volume of a gas at a constant pressure is directly proportional to its Kelvin temperature
barometer
a device used to measure atmospheric pressure

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