(Solved): A shop-vac is capable of pulling in air at a rate of What is the rate of the vacuum's air flow in ...

A shop-vac is capable of pulling in air at a rate of What is the rate of the vacuum's air flow in A hollow spherical iron ball has a diameter of \( 15.3 \mathrm{~cm} \) and has a mass of \( 10.1 \) kilograms. Assuming the hole inside the ball is spherical with the same center as the center of the ball, what is the thickness in \( \mathrm{cm} \) of the layer of iron surrounding the hole? The density of iron is \( 7.86 \) \( \mathrm{g} / \mathrm{cm}^{3} \). (The volume of a sphere is \( (4 / 3) \pi r^{3} \).) The Blue Giant of the Orient is the largest faceted sapphire in the world, with a mass of ). Given that sapphire has a density of 5 \( = \) , what is the volume of this sapphire in