Concept explainers
(a)
Interpretation:
The fraction of
Concept introduction:
The radioactive decay can be calculated as follows:
Here, N is amount of subtance remain after time t,
The specific radioactivity per liter
Here,
(b)
Interpretation:
The concentration of
Concept introduction:
The radioactive decay can be calculated as follows:
Here, N is amount of subtance remain after time t,
The specific radioactivity per liter
Here,
(c)
Interpretation:
The reason for the radioactive cesium in the tank to poses a signifiicant environmental threat but not by the radioactive barium should be explained.
Concept introduction:
All the radioactive substance are harmfull for environment. The extent of harm they can cause to environment depends on their decay rate that depends on their half life time. More the decay rate or lower the half life time, less the substance is harmful to environment. Therefore, a substance with higher half life time will have low decay rate and it will be more harmful to the environment.
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