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
Answer:
for what I can see in the picture the volume is 155
Explanation:
Answer:
Explanation:
He should use these for airborne sounds
MDF Fiberboard.
Gypsum Board.
Plasterboard.
Mineral Wool.
He should avoid using
Answer: thermal conductivity
Explanation: