click below
click below
Normal Size Small Size show me how
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 |