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Physics, Chemistry and Biology: Post your doubts here!

For the radioactivity question I averaged the count rates (once they stopped decreasing) and I got ~19 counts/s <--background radiation (BR) To find the half life, I subtracted the BR from each value and noticed that after every 2 half lives the value was close to the count rate every 1hr e.g...
- Finnthehuman
- Post #9,894
- May 25, 2017
- Forum: O-Levels / GCSEs / IGCSE

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