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the definition of density
the weight of a materiel relative to its volume
density depends on what ?
composition
structure
How heavy they are and how closely packed together
how do you measure density
to compare density of water (1cc/1gr) with the density of a material
what is SG
specific gravity
is the ratio of a substance to the weight of an equal volume of water
how can you calculate SG
dividing the weight of a material by the equal volume of water
SG = a:a-w
a= weight in air
w = weight in water
