1) a block of wood has specific gravity 0.79. When placed in water, what percent of the volume of the wood is under the surface. And what volume of the wood is above the surface?
2) Legend says that Archimedes, in determining whether or not the king%u2019s crown was made of pure gold, measured its volume by the water displacement method. If the density of gold is 19.3 g/cm^3, what volume would be necessary to prove that it is pure gold?