The block in the illustration is floating in water. water has a density of 1.0 g/cm 3 and about 25 percent of the block is below water. what is a good estimate of the density of the block?

Answer;

0.25 g/cm^3

Explanation;

25 % of 1 g/cm^3

=  0.25 g/cm^3

Water's density is 1 g/ml. Objects with a density greater than 1g/ml will sink when placed in water.

Objects with a density less than one will float when placed in water. If a block has a density of 0.1g/cm3 it will float because it's density is less than 1.

The percent of the block that will be below the water depends on the density of the floating object. To find the percentage of the object below the water we just convert the density of the object as a percentage.