An aluminum block has a mass of 0.25 kg and a density of 2700 kg/m3. a) Calculate the volume of the aluminium block. b) Determine the buoyant force exerted on this block when it is completely submerged in water of density 1000 kg/m3

a

The volume of the aluminum is  

b

The buoyant force exerted is  

From the question we are told that

                  The mass of the aluminum is

                   The density of the aluminum is

Generally volume is mathematically represented as

 Substituting values accordingly

Generally buoyant force is mathematically represented as

Where  V is the volume of the aluminum

            is the density of water

           g  is the acceleration due to gravity =

Substituting these values accordingly we have

b.a device that inputs heat into a cool object

as we know our atmosphere or air have different levels. every level has other gasses, and every gas has another permeability. when the light comes from lower permeability to higher permeability, it changes its direction. so that means that when the light comes from the moon to the earth, it changes it's direction many more times. it basically means that the shape of the light part of the moon is changed on the earth.

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