A piece of iron of arbitrary shape is immersed in the mixture of mercury and an unknown liquid. It is found that 46% of the iron volume is the unknown liquid, and the remaining 54% is in mercury. The density of iron and mercury are 7.8X103 kg/m3 and 13.6X103 kg/m3 respectively. What is the density of the unknown liquid

one person pulls 90n one way and the other has 100n pulling the other way.

so the net force = 90 - 100 = -10n,

or the ans can be 10n if the picture shows -90n and 100n instead.

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.  

hot magma rises and pushes up toward the lithosphere, and as it cools it cycles back down toward the core to be heated again.