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willsimcoe2891
16.12.2020 •
Mathematics
If there are 360 g of radioactive material with a half life (decreased by half or 50% )of 1 hour, how much of the radioactive material will be left after 4 hours ?
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Ответ:
After 1 hour, 360 g decays to 180 g.
After another hour (total 2 hours), 180 g decays to 90 g.
After another hour (total 3), 90 g decays to 45 g.
After one more (total 4), 45 g decays to 22.5 g.
More quickly, with a half-life of 1 hour, the 360 g of starting material decays to
(360 g) / 2⁴ = 22.5 g
In general, if the half-life is 1 hour, then after n hours, an initial amount A of this substance decays according to
A / 2ⁿ
Ответ:
The product of (3.7 × 10^4) is 37000
The product of 2*7 is 14
The product of 4* 10^3 is 4000
The product of 0.74*10^4 is 7400
The product of 7.4* 10^4 is 74000
The product of 74 * 10^4 is 740000
So if you add all the numbers together you will get..862414. Hope this helps...
Step-by-step explanation: