FLUID MECHANICS | 8.1

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9 Terms

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Density

-ratio of mass to volume

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<p></p>

density formula / si units

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UNIQUE

◼Density is **** for each substance!

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Incompressible fluids

Molecules are in contact

• Densities remain nearly constant

• Liquid (water)

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Compressible fluids

Large distances between molecules

• Densities change readily

• Gases (air)

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<p>Specific Gravity (s.g.)</p>

Specific Gravity (s.g.)

ratio of the density of an object to that of standard

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object will float.

0 < s. g. < 1,

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object will sink.

If s. g. > 1,

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sink

When an object’s density is greater than that of fluid, it will **** ,

otherwise it will float.