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Physics, 27.07.2019 02:20, tennispro154
The mass at time t of a radioactive substance is m(t)=m(0)ekt, where m(0) is the initial mass and k=β0.000135. the mean life m of an atom in this substance is m=βkβ«β0tektdt=
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The mass at time t of a radioactive substance is m(t)=m(0)ekt, where m(0) is the initial mass and k=...
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