What is the fastest way to solve the task in 2.5 minutes?
It takes me too long to solve these and similar problems without a calculator (TMS). Advanced decay problems, etc., like this. Can anyone give me some tips? How would you approach this problem, for example?
GLg
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At least 400 must be present so that the 200 can decompose.
Concentrations below 400 are therefore not stable anyway, the space was not safe even without construction site.
Thank you, now I see what the 400 will come up with! (It was obvious that…)
It's not in 2.5 minutes. Even with calculators, it's hard because of the length of the text.
Numerically, it's the fastest. If you want to calculate it normally, this is complicated as the variable occurs in the exponent and in the product. You may also need a logarithm.
Numerically in 3.8 day steps, however, this is quite fast.
It can't work!
You have to
3000*(1/2)^(t/3.8) + (200*t/3.8)*(t/3.8) = 300
after t. You can't do that in 2.5 minutes.
Come out for almost 14 days.
I don't understand the task. Do you want 200 Bq from outside per half-life to be added constant? I tried this with Excel, then seems to go against 400…
That's what I understood. And they're falling apart.
I'd say you've made a mistake. All that comes after t days must first fall apart from the beginning and must not be directly combined with the decay from the other.
Yeah, that's right.
Look at my Excel sheet.
"every 3.8 days 200 Bq new Radon"