H2P-562
Activity and decay constant
H2 Physics · JC 2 · Easy · Activity and decay constant
A radioactive sample has an initial activity of 800 Bq. After 18 minutes, its activity has fallen to 200 Bq. Assuming exponential decay, what is the half-life of the sample?
- 9.0 min
- 4.5 min
- 6.0 min
- 18 min
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