Question

the mass of an iron ball is 800g. what should be the volume of the ball if the density is 7.87 g cm–3? also find the density in the SI unit and the relative density.​​

Answer 1

Answer:

given :

mass (m) = 800 g

density (d) = 7.87 g/cm^3

to find : volume (v)

solution :

density = mass / volume

volume = 800/7.87

volume = 101.65 cm^3

so, the volume of iron ball will be 101.65 cm^3.

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Answer 2

Explanation:

. Evolution is the gradual change occurring in living organisms over a long duration.

ii. This is a very slow-going process through which development of organisms is achieved.

iii.All the stages in changes occurred in various components ranging from stars and planets in space to

the biosphere present on the Earth should be included in the study of evolution.

iv.Formation of new species due to changes in specific characters of several generations of living

organisms as a response to natural selection, is called as evolution.

v. Progressive development of plants and animals from ancestors having different structural and

functional organisation is called evolution.