A large block has dimensions of length = 0.15 m, width = 0.2 m, and depth = 0.5 m. It has a mass of 117 kg. The volume of a block, Vblock = (length) x (width) x (depth).   (a) Using the table shown, what is the block made of?  (b) If completely under water, what is the buoyant force acting on the block?

Figure (a) below shows a solid cube hanging from a spring scale, with the scale measuring 5.45 N. In figure (b), the suspended cube is submerged in water, and the scale now reads 3.90 N. What is the density (in kg/m³) of the cube? (Hint: the free-body diagram to the right of figure (b) shows the forces acting on the cube, with Band T pointing up and Mg pointing down.) a Scale kg/m³ b FE Mg

A 16.0 kg platinum mass rests on the bottom of a pool. (The density of platinum is 21.4 ✕ 103 kg/m3 and the density of water is 1.00 ✕ 103 kg/m3.) (a) What is the volume of the platinum (in m3)? m3 (b) What buoyant force acts on the platinum (in N)? (Enter the magnitude.) N (c) Find the platinum's weight (in N). (Enter the magnitude.) N (d) What is the normal force acting on the platinum (in N)? (Enter the magnitude.) N

A scientist is calculating the density of an ore sample. The scien- tist measures that the ore sample weighs 22.4 N in air. When the sample is suspended by a thin light cord and totally immersed in water, the tension in the cord is 14.2 N. What is the density of the ore sample that the scientist calculates. You can assume that any buoyant force from air is negligible.