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80 pound per cupid foof

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6mo ago

The specific gravity of coal typically ranges from 1.1 to 1.5, depending on the type of coal and its composition. Specific gravity is a measure of density, comparing the weight of a substance to an equal volume of water.

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Q: What is the specific gravity of coal?
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Aluminum has no specific gravity, at least by the current definition of gravity.


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"If you have ever watched one of the older Superman films, you may have seem the famous clip where Superman turns a chunk of coal into a diamond. This is impossible. The density of coal is 1,330kg/m^3 whereas for diamond it is 3,520,000,000 kg/m^3. When diamond is divided by coal, we learn that diamond is 2,646,616.5414 times more dense than coal. If Superman really was to turn coal into that perfect diamond he would need 9316kg of coal, that is about four or five SUVs. That would be cool." .... Ah.. no. The density of diamond is typically around 3,500 kg/m3, and thus has a relative density of 3.5 i.e. a density 3.5 times that of water. If the density was 3,520,000,000 (!) as stated above, a ladies wedding ring, with a volume of 1cm^3 (big rock!) would weigh (i.e. have a mass of) 3,520 kg!! That's over 3 tonnes. Not even a Bavarian Barmaid could handle such a ring! Superman could achieve his feet, though his diamond would be one third the volume of the coal he started with.


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