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Phys Sci - Chap 13
vocabulary words
Question | Answer |
---|---|
pressure | result of the force distributed over an area |
pascal | SI unit of pressure (Pa), equal to 1 newton per square meter |
fluid | substance or mixture that flows and has no shape of its own |
hydraulic system | device that uses a pressurized fluid acting on pistons of different sizes to increase force |
lift | upward force due to a pressure difference between the top and bottom of a wing |
buoyancy | ability of a fluid to exert an upward force on an object placed in it |
buoyant force | upward force acting on an object in a fluid |
Archimedes principle | equivalence of the buoyant force on an object and the weight of the fluid displaced by the object |