A body weight 10.2g in air , 8.6 g in water. Determine the R.D. Of the Body
Answers
Not gonna tell you, (since this appears to be a homework question.)
That said, let’s talk about specific gravity.
The term specific gravity (SG) is the ratio of density of a solid or liquid to that of water at 4 degrees C. (The term can also refer to the ratio of the density of a gas to the density of dry air at standard temperature and pressure, although this is less often used.) SG is a dimensionless quantity; it’s not expressed in units.
To find the SG of a solid or liquid, you must know its density in kilograms per cubic meter (kg/m3) or grams per cubic centimeter (g/cm3). Then, divide this density by the density of pure water in the same units. If you use kg/m3, divide by 1000. If you use g/cm3, divide by 1 (that is, leave the number alone). It is important to use the same units in the numerator and denominator.
Pure water has an SG = 1. Materials with a SG < 1 are less dense than water, and will float; substances with a SG > 1 are more dense than water, and will sink. An object with a density of 85 kg/m3 has an SG = 0.085, and will float high on the surface of a body of water. An object with a density of 85 g/cm3 has an SG = 85, and will sink rapidly.
Have fun because the answer is really cool; especially where and what it leads to. I so envy you the trip as you explore and come to understand. Go get’em tiger.