Providence mint
The "KGS" stands for "Karat Gold Shell". The piece isn't solid karat gold , it rather has a type of gold plating on it instead.
If it is a mark on jewelry, it means that the piece is 14 karat gold plated, not solid gold.
If "18k ge" is a mark on jewelry, it means that the piece is 18 karat gold electroplated, not solid gold.
The 14kgp mark indicates that the piece is 14 karat gold plated, not solid gold.
HGEA probably means heavy gold electronically applied. In other words, the piece is gold plated, not solid gold.
The large piece of the solid part of the earth is called a tectonic plate
yes
Yes it is a one piece shaft.
Because the density of this piece of plastic is under 1 g/cm3.
24kGP stands for 24 karat gold plated. This means that the necklace has a thin layer of 24 karat gold applied on top of another metal, usually brass or sterling silver. It is not solid gold throughout.
The size of a nanoparticle is smaller than any one piece of a solid; also an ion is smaller than a nanoparticle.
If, by 'one piece', you mean solid -as opposed to laminated- then the answer is that a solid core will have significantly-higher eddy current (circulating current) losses than a solid core.