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Yogita Ingle 5 years, 10 months ago
We can explain this by heisenberg's uncertainty principle .
Formula = Δx . Δp > h/4π
Δx . m . Δv> h/4π
Δv> h/4π·Δx·m
Now if electron is in the nucleus then Δx= 10^-15m (size of nucleus)
{tex}m= 9.1 × 10^-31kg, h= 6.626× 10^-34{/tex}
If we substitute all the values and just observe the power on ten we get
Δv > _______x10^11
that is an electron cannot have velocity greater than the velocity of light.
hence it cannot exist in nucleus
Posted by Ajay Singh 5 years, 10 months ago
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Yogita Ingle 5 years, 10 months ago
The cyclic movements of chemical elements of the biosphere between the living organisms and the environment are referred to as biogeochemical cycles.
Bio refers to living organisms and geo refers to rocks, soil, air and water on the earth.
Nitrogen is a major constituent of the atmosphere comprising of about 78% of the atmospheric gas.
Ninety per cent of fixed nitrogen is biological. The principal source of free nitrogen is the action of soil micro-organisms and associated plant roots on atmospheric nitrogen found in pore spaces of the soil. Nitrogen can also be fixed in the atmosphere by lightning and cosmic radiation. In the oceans, some marine animals can fix it. After atmospheric nitrogen has been fixed into an available form, green plants can assimilate it.
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Yogita Ingle 5 years, 10 months ago
- Sociology studies human society as an interconnected whole and how society and the individual interact with each other.
- One of the tasks of sociology is to unravel the connection between a personal problem and a public issue.
- It tries to understand that the individual in modern times belongs to more than one society and how societies are unequal.
- Thus, sociology as a systematic study of society, distinct from philosophical and religious reflections, as well as our everyday common sense observation about society.
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