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The time necessary for the decay of one- half sample of a radioactive substance is a _____. mass defect daughter half life nuclide
asked
Oct 17, 2017
Chemistry
high-school
2
answers
5
votes
123k
views
An acute angle θ is in a right triangle with sin θ = 6/7 . What is the value of cot θ?
asked
Jun 5, 2017
Mathematics
high-school
2
answers
0
votes
104k
views
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