Question: A sample ofU 2 3 8 9 2 containing 6 x 1 0 1 5 nuclei undergoes radioactive decay. If the half - life is

A sample ofU238
92 containing 6x1015 nuclei undergoes radioactive decay. If the half-life is 4.5x105 yrs,
what fraction ofU238
92 will remain after 106 yrs?
(b) What is the activity at t=0?
(c) What is the activity at t=9x105 years

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