Frequently Asked Questions
What is specific gravity?
The ratio of a substance's density to a reference density (usually water at 1000 kg/m³). It is dimensionless.
What is the specific gravity of water?
Exactly 1 when water is its own reference. Pure water at 4 °C is the standard reference for SG.
Does SG predict floating?
Yes - SG < 1 floats in water; SG > 1 sinks. Container shape matters too (boats float despite steel SG > 1).
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