Specific Gravity

The specific gravity of a substance is often listed in tables instead of either mass density or weight density

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Questions #: 6
Time: 5 minutes
Pass Score: 80.0%
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Specific gravity is defined as the ratio of the density of the substance in question to the density of water

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The specific gravity or a substance is always numerically equal to its mass density

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Specific gravity unit of measurement

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The specific gravity has a unit of measurement g/cm3

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What is the density of rock?

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What is the density of rock in lb/ft3?

  • The specific gravity of rock is about 5 which is an approximate since rock is of different types
  • Weight density of water is 62.4 lb/ft3

Answer = (1) lb/ft3

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How many cubic feet are in a cubic yard?

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Answer = (1) ft3

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What is the weight of a cubic yard of rock?

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Answer = (1) lb

rock density = 312 lb/ft3

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0
sin cos tan
sin-1 cos-1 tan-1 π e
xy x3 x2 ex 10x
y√x 3√x √x ln log
( ) 1/x % n!
7 8 9 + MS
4 5 6 – M+
1 2 3 × M-
0 . EXP ÷ MR
± RND C = MC
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