ch42-p047 - 47 We note that 3.82 days is 330048 s and that...

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47. We note that 3.82 days is 330048 s, and that a becquerel is a disintegration per second (see §42-3). From Eq. 34-19, we have NR T VV == × F H G I K J 12 5 3 10 3 2 155 10 330048 2 74 10 ln . ln . Bq m sa t o m s m where we have divided by volume v . We estimate v (the volume breathed in 48 h = 2880 min) as follows: 2 1 1000 2880
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