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Physics
Physics
Problem
A sample of
U
238
\text{U}^{238}
U
238
(half-life =
4.5
×
10
9
4.5 \times 10^9
4.5
×
1
0
9
yr) ore is found to contain 23.8g of
U
238
\text{U}^{238}
U
238
and 20.6 g of
Pb
206
\text{Pb}^{206}
Pb
206
. Calculate the age of the ore.
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