Relative density of water formula and water pressure
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Relative density, or specific gravity, is the ratio of the density (mass of a unit volume) of a substance to the density of a given reference material. Specific gravity usually means relative density with respect to water.
Water Pressure Formula. Pressure is defined as the force applied which is perpendicular to the surface of the object per area over which the force is distributed. The Gauge pressure is the pressure relative to ambient pressure. Various units are applied to express pressure. Some of which derive from a unit of force per unit area.
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mass of unit is called density .......
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