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An atomic nucleus must contain at least one neutron or else the force of attraction of the electron(s) will collapse the atom. True/false
asked
Dec 10, 2015
Chemistry
high-school
2
answers
0
votes
227k
views
Prove: cosx.cos2x+(sin2x)^ 2/2cosx=cosx
asked
Sep 11, 2015
Mathematics
high-school
2
answers
0
votes
133k
views
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