A submarine fills a special storage area known as ballast with water in order to increase its density. This allows it to dive de
eper into the ocean. When a submarine needs to rise rapidly, compressed air is used to push the water out of the ballast. What effect does replacing the water in the ballast with air have on the submarine?
1 answer:
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Answer:
2.15 mg of uranium-238 decays
Explanation:
For decay of radioactive nuclide-
where N is amount of radioactive nuclide after t time, is initial amount of radioactive nuclide and
is half life of radioactive nuclide
Here ,
and
So,
so, N = 2.446 mg
mass of uranium-238 decays = (4.60-2.446) mg = 2.15 mg