Question

would a block of material of 6 cubic foot volume and weighing 400 pounds float or sink in salt water ? Why? please help ! thank you.

Answer 1

density = mass/volume. density of water is 1g/ml or 1gm/cm^3. an object floats on water if the object is less dense than water. You need to find the density of salt water which is different from fresh water and then find the density of your object and compare them. Objects usually float more on salt water than fresh water.