[08] A building is contaminated with radon (" Rn ,m=222.017 570u ), a radioactive gas with a half- 86 life that is around 4 days. The safe level is less than 10.0decay/min while 150decay/min was measured at the time when radon was detected. (a) What is the radon's decay constant? (b) How long should people be evacuated from this building after radon was detected?

Modern Physics
3rd Edition
ISBN:9781111794378
Author:Raymond A. Serway, Clement J. Moses, Curt A. Moyer
Publisher:Raymond A. Serway, Clement J. Moses, Curt A. Moyer
Chapter14: Nuclear Physics Applications
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[08] A building is contaminated with radon (Rn,m=222.017 570u ), a radioactive gas with a half-
life that is around 4 days. The safe level is less than 10.0decay/min while 150decay/min was
measured at the time when radon was detected. (a) What is the radon's decay constant? (b) How
long should people be evacuated from this building after radon was detected?
Transcribed Image Text:[08] A building is contaminated with radon (Rn,m=222.017 570u ), a radioactive gas with a half- life that is around 4 days. The safe level is less than 10.0decay/min while 150decay/min was measured at the time when radon was detected. (a) What is the radon's decay constant? (b) How long should people be evacuated from this building after radon was detected?
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