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Physics
Physics
Problem
A nuclide has a decay constant
1.6
×
10
−
4
s
−
1
1.6\times10^{-4}\,\text{s}^{-1}
1.6
×
1
0
−
4
s
−
1
. Calculate, in minutes, the time required for the number of undecayed nuclei to drop to
1
%
1\%
1%
of the initial number. a)
5.1
×
10
2
min
5.1\times10^{2}\,\text{min}
5.1
×
1
0
2
min
b)
2.1
×
10
2
min
2.1\times10^{2}\,\text{min}
2.1
×
1
0
2
min
c)
4.8
×
10
2
min
4.8\times10^{2}\,\text{min}
4.8
×
1
0
2
min
d)
4.2
×
10
2
min
4.2\times10^{2}\,\text{min}
4.2
×
1
0
2
min
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