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16 Cards in this Set
- Front
- Back
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Fluid |
Something that flows Liquid or gas Defined by the container it fills (volume) |
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Density |
Mass ÷ volume Kg/m^3 |
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Weight Density |
Weight ÷ volume N/meters^3 |
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Pressure |
Force ÷ area Pascals |
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Pascal |
1 Newton/meter^2 |
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Liquid pressure |
Weight density • depth |
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Buoyant force |
Upward force an objects weight must be lower than in order to float |
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Archimedes principle |
An immersed object is buoyed up by a force = to the weight of the fluid it displaces Example) an 3N object displaces 2N of water, buoyant force is 1N and object sinks Also applies to air pressure |
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Floating |
An object floats when it displaces a volume of fluid = to its weight |
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Boyles law |
Pressure1•volume1=pressure2•volume2 |
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Atmospheric pressure |
Causes by weight of the air |
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Density of air decreases as |
Altitude increases |
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Avg. Air preasure @ sea level |
101.3 kPascals |
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Barometer |
Measures atmospheric pressure |
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Pascals principle |
A change in pressure @ any point in an encloses fluid at rest is transmitted undiminished to all points of the fluid Water pipe example |
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Bernoullis principle |
As speed of a fluid increases, internal pressure decreases |
