what is the difference between specific gravity & density?
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Density is defined as mass per unit volume. It has the SI unit kg m-3 or kg/m3 and is an absolute quantity. Specific gravity is the ratio of a material's density with that of water at 4 °C (where it is most dense and is taken to have the value 999.974 kg m-3). It is therefore a relative quantity with no units.
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The term “Specific Gravity” (SG) is used to define the weight or density of a liquid as compared to the density of an equal volume of water at a specified temperature. The temperature used for measurement is usually 39.2oF (4oC), because this temperature allows water to assume its maximum density.
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Apparent Specific Gravity, Gsa. The volume measurement only includes the volume of the aggregate particle; it does not include the volume of any water permeable voids. ... Since it includes the water permeable void volume, bulk specific gravity will be less than apparent specific gravity.
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Most recent answer. Bulk density of any material is the weight of PARTIALLY COMPACTED material per unit volume. Bulk density of material is not equal to it's specific gravity as specific gravity is weight of FULLY COMPACTED material per unit volume.
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When you talk of density you are relating an object to its quantity of mass per unit volume. ... Specific weight or unit weight is the weight of a substance per unit volume of material such as water at earth gravity at 5 degress centigrade is 9.807 kN/m.
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Density is the only thing affecting whether something floats or sinks. If an object has a higher density than the fluid it is in (fluid can mean liquid or gas), it will sink. If it has a lower density, it will float.
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Density is directly proportional to pressure and indirectly proportional to temperature. As pressure increases, with temperature constant, density increases.
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Buoyancy is independent of the gravity it is in because buoyancy is determined by the relative densities of the material being buoyed and the the fluid that is being displaced. The common name for the density related to buoyancy is specific gravity. ... Object can float in fluids other than water.
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Density is normally measured using units of g/cm3 for smaller amounts, and kg/m3 for larger amounts. Calculations of density can be represented by a triangle: To work out the mass, calculate density x volume: to work out density, it is mass ÷ volume, and for volume it is mass ÷ density.
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Absolute density is be measured in units of mass/volume, such as grams/cc or pounds/gallon. Relative density is dimensionless, i.e. it is numerical with no units, and expresses the ratio of densities of two different things as a ratio, such as "mercury is about 1.1 times as dense as lead".
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Specific gravity is the density of a substance divided by the density of water. Since (at standard temperature and pressure) water has a density of 1 gram/cm3, and since all of the units cancel, specific gravity is usually very close to the same value as density (but without any units).
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Density is the amount of mass located in a specific volume. The density of an object can change if either the mass or volume of the object is changed. Fluids, such as water, have a certain density. If an object is more dense than water, it will sink; if it is less dense than water, it will float.
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Bulk density is the density of a “bulk” of a substance, typically expressed in kg/m3 or similar. The substance might be 20 mm gravel. ... A specific gravity value is the ratio of the density of a substance to the density of a reference substance, usually the latter substance is water.
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Density is the only thing affecting whether something floats or sinks. If an object has a higher density than the fluid it is in (fluid can mean liquid or gas), it will sink. If it has a lower density, it will float. Density is determined by an object's mass and volume.
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n in this unit. Density may be calculated from a separate mass and volume measurement, or, in the case of liquids, may be determined directly by the use of an instrument called hydrometer. hich it is not soluble, and the volume of liquid displaced measured.
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Weight is a force that pulls on a mass and is measured in Newtons. So on Earth, Weight would be your (mass x acceleration( 9.8 ) . ... Density basically means how much mass is occupied in a specific volume or space. Different materials of the same size may have different masses because of its density.
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Density is directly related to the mass and the volume. In fact it, tells us of the exact relationship between the two. To find an object's density, we take its mass and divide it by its volume. If the mass has a large volume, but a small mass it would be said to have a low density.