Ablock with a volume of 12cm has a density of 3cm. the block is cut into two pieces. one piece has a volume of 8cm, and the other piece has a volume of 4 cm. what are the densities of the two?

Density does not change when you divide the cube, due to the principle of mass conservation. The density given in this case by 3 , will remain the same.

The only way for it to change, will be if you compressed the block, so now the same mass will be compressed in less volume, or you add heat to the system.

Explanation:

this is an example of "committed" time.

committed time, as contracted time, takes need over essential and available time since it is seen as profitable work. it alludes to the time allotted to keep up a home and family. at the point when a man is commuting using committed time this individual may feel that the drive is an obligation to family, for example, strolling youngsters to class or driving a mate to work. contracted and committed time clients may feel that their commute could really compare to the commute of important or leisure time clients on the grounds that their commute is profitable work. in this manner, they might be more disposed to pick a mechanized method of movement.