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Physics
Physics
Problem
Two radioactive nuclides X and Y initially contain the same number of undecayed nuclei. The half-life of X is 1 day, whereas that of Y is 10 days. The ratio of their initial activities
A
X
/
A
Y
A_X/A_Y
A
X
/
A
Y
is ____. a)
100
100
100
b)
10
10
10
c)
0.1
0.1
0.1
d)
5
5
5
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