A. Six electrons
B. six protons
C. they are composed of two up quarks and one down quark.
Answer:
Gravitational force between masses there is Gravitational force .
Answer:
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Explanation:
Coal is burned to get energy. By burning coal, green houses gases like carbon dioxide, nitrogen oxides and suphur oxides are produced.
Rest of the energy sources given in the option are clean energies.
Answer is A.
Answer:
ion and
ions.
Explanation:
As we notice the glass of water, in this observation we find that the glass also made up of sodium silicate which will give us oxygen ion.
And the water which is present in the glass will break into the hydroxyl ion and
ion .
Therefore, glass of water contains
ion and
ions.