How Is Specific Gravity Defined?
Answers
Answer:
Specific Gravity, SG, is a unit less quantity that gives the scientist or engineers an idea of how dense a substance is compared to water. The density of water, which is one kilogram per liter (at 4 degrees C), is assigned a SG of 1.000. If a substance is denser than water, it will have a SG greater than 1.000; if it is less dense than water, its S.G. will be a value less than 1.000 (but greater than zero). Let's say a substance has a density of 2.5 kilograms per liter. That means that its SG is 2.5 (2.5 divided by 1.000).
Answer:
The formula for specific gravity, given that the reference substance is water, is the density of the object divided by the density of the water. So, the specific gravity can also be solved by dividing the weights of the object and the water.