Q: What are the rules of density?

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It isn't clear - to me at least - what "general rules" you are talking about. Density is simply defined as mass divided by volume; this applies to any substance.

DENSITY : density is the ratio of mass and volume of the substance density=mass/volume RELATIVE DENSITY : It is the ratio of density of a substance to the density of water

relative density is related to the density of water. i.e. a relative density of 19.3 means that it has a density 19.3 times the density of water. The density of water is 1g/ml therefore the density of gold is 19.3g/ml

An object will float if it has less density than the density of the liquid.An object will float if it has less density than the density of the liquid.An object will float if it has less density than the density of the liquid.An object will float if it has less density than the density of the liquid.

Density=mass/volume density of water in the whole earth is 1

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It isn't clear - to me at least - what "general rules" you are talking about. Density is simply defined as mass divided by volume; this applies to any substance.

Volume and Temperature. Higher temperature increases pressure and decreases density. Lower temperature decreases pressure and increases density. (Except with water, in which case ice is less dense than liquid water. [Keep in mind that vapor is still less dense than liquid and follows the rules.] This is the only exception known to me). Higher volume decreases pressure and increases density. Lower volume increases pressure and decreases density.

linear density area density volume density linear density area density volume density

arithmetic density, agricultural density, physiological density, urban density, residential density

arithmetic density, agricultural density, physiological density, urban density, residential density

DENSITY : density is the ratio of mass and volume of the substance density=mass/volume RELATIVE DENSITY : It is the ratio of density of a substance to the density of water

DENSITY : density is the ratio of mass and volume of the substance density=mass/volume RELATIVE DENSITY : It is the ratio of density of a substance to the density of water

Its density. Density is mass per unit volume.

This is the determination of the specific density (the ratio liquid density/water density).

Yes, ball temperature has nothing to do with it, unless your ball loses density through heating. If that, then no.

Not sure what a cubic gram is. Grams per litre is simple a measure of density. Whatever cubic grams is, it is not a measure of density and so these two measure different things. Therefore, according to the rules of elementary dimensional analysis, conversion from one to the other is not valid.

relative density is related to the density of water. i.e. a relative density of 19.3 means that it has a density 19.3 times the density of water. The density of water is 1g/ml therefore the density of gold is 19.3g/ml