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Gaurav Seth 6 years, 10 months ago
G stands for Newton's universal gravitational constant, whereas g stands for the acceleration due to gravity at a certain point.
G = 6.67300 × 10-11 N.m2.kg-2. G is a constant throughout space and time.
g = 9.8 m.s-2. g is a variable quantity.
G is a scalar quantity whereas g is a vector qualtity.
(According to Newton's law of universal gravitation the force of attraction between two bodies is given by F = GMm/r2, where the symbols stand for their usual well known meanings. Also the weight of a body of mass m is F = mg.
So mg = GMm/r2,
or g = GM/r2
g is a constant at a given location, which depends upon M and r.)
Posted by Harsh Chouhan 6 years, 10 months ago
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Gaurav Seth 6 years, 10 months ago
Lifestyle is a manner of living that reflects the person's value and attitude.
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Meghna Thapar 5 years, 4 months ago
The continuous process by which nitrogen is exchanged between organisms and the environment is called nitrogen cycle. Nitrogen is an essential nutrient, needed to make amino acids and other important organic compounds, but most organisms cannot use free nitrogen, which is abundant as a gas in the atmosphere.
Nitrogen cycle involves the following steps:
(i) Nitrogen fixation: This process involves the conversion of atmospheric nitrogen into nitrates, which are soluble in water. This is done by various nitrogen fixing bacteria. Example - Rhizobium, blue green algae and bacterium Azotobacter.
(ii) Ammonification: It is the process of decomposing complex, dead organic matter into ammonia. This is done by microorganisms living in the soil.
(iii) Nitrification: It is the process of conversion of ammonia into nitrites and then into nitrates. This is done by nitrifying bacteria. Example - Nitrosomonas and Nitrobacter.
(iv) Denitrification: It is the process of reducing nitrates present in the soil to release nitrogen back into the atmosphere. Example - Pseudomonas.
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Punit Bihare 6 years, 10 months ago
2Thank You