Recent content by melissaaa

Homework Statement An unprotected radiation worker walks into a room which she knows is sometimes used to store high activity sources. She is unaware that, on that particular day, it contains an unshielded Co-60 γ source. The source is encapsulated in a material which filters out β...

I did it again and I think I got the decay constant wrong, is it meant to be: T(1/2)= ln(2)/λ λ= ln(2) /6.01 x 60 x 60 = 0.0000320367...

The question is: The activity of a source of Tc-99m (half-life = 6.01 hours) is counted in an ionization chamber in a radiopharmacy. (b) 44989345 counts are counted in 5.0 seconds. What is the activity of this sample and what is the error on this measurement? (c) A nearby hospital...