Yes but the result of the equation is not 20 minutes. I had used the same equation you quoted and that gives you an answer close to 22 minutes, not 20!
HELP! with this SILLY looking RADIOACTIVITY problem
I was presented with a radioactivity problem which does not make any sense to me. Hope it does to someone in here:
A radioactive element releasing 8 rays (whatever this means) is giving a Geiger count of 188 per minute at the beginning of a...