A nuclear technician was accidentally exposed to potassium-42 while doing brain scans
Chapter 0, Problem 5.77(choose chapter or problem)
A nuclear technician was accidentally exposed to potassium-42 while doing brain scans for possible tumors. The error was not discovered until 36 h later when the activity of the potassium-42 sample was 2.0 uCi. If potassium-42 has a half-life of 12 h, what was the activity of the sample at the time the technician was exposed? (5.3, 5.4)
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