In 1978, a 200-gram sample of cobalt-60 was buried in the yucca mountains, just northwest of las vegas, nevada. how much of this sample was present in 2004? the half-life of cobalt-60 is 5.23 years.
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Ответ:
Every 5.23 years, half of our 200-gram sample decays.
It has reached its half life ~4.97 times.
We use this formula to find our new amount:
Every time it reaches its half life, it will be halved...the fractional exponent there is to pick up minute differences like in our 4.97.
Ответ: