A sealed source shows an activity of kBq at 10:00 h

PHYSICS · Multi-part · A Level · Physics · Nuclear physics · Nuclear physics

Problem

A sealed source shows an activity of (4.0±0.1) (4.0\pm0.1)\,kBq at 10:00 h. The half-life of the radionuclide is 18.0 h. (a) Nominal time to reach 1.0 kBq (b) Earliest and latest possible times considering uncertainty

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