Figure (a) below shows a metal block hanging from a spring scale, with the scale measuring 5.25 N. In figure (b), the suspended block is submerged in water, and the scale now reads 4.00 N. What is the density (in kg/m ) of the block? (Hint: the free-body diagram to the right of figure (b) shows the forces acting on the block, with B and T pointing up and Mg pointing down.) Scale B Mg a b kg/m 3