What is the most effective way to protect dry lands from desertification
2 answers:
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Answer:
d) The stone will have about 50 joules of kinetic energy and 0 joules of potential energy .
Explanation:
Given :
Initial Potential energy , .
Initial Kinetic energy , . ( because ball is in rest )
Now , we know , kinetic energy is maximum when an object reaches ground .
Also , potential energy is zero when an object is in ground .
We know , by conservation of energy :
Initial total energy = Final total energy
Therefore , option d) is correct .
Answer:
The value is
Explanation:
From the question we are told that
The atom fraction of metal A at point G is
The atom fraction of metal A at a distance 5000nm from G is
The number of atoms per is
The diffusion coefficient is
Generally of the concentration of atoms of metal A at G is
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Generally of the concentration of atoms of metal A at a distance 5000nm from G is
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The concentration gradient is mathematically represented as
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Generally the flux of the atoms per unit area according to Fick's Law is mathematically represented as
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Generally if the cross-section area is
Generally the number of atom crossing the above area per second is mathematically is
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