Answer:
The current amount of the Potassium-40 sample is approximately 37.521 grams.
Explanation:
The amount of the sample of the radioactive isotope decays exponentially in time, the amount of mass of the sample as a function of time (
), in grams, is described below:
(1)
Where:
- Initial mass, in grams.
- Time, in years.
- Time constant, in years.
The time constant can be found from half life (
), in years, described in statement:
(2)
If we know that 
, 
and 
, then the current amount of the sample is:
The current amount of the Potassium-40 sample is approximately 37.521 grams.
Very acuratley, once the rate of birth, mortality rate, and infant mortality rate are taken into perspective.
Well I think it's gonna be C - 90° N and 90<span>° S - because those latitudes are located exactly on both north and south poles and there's nothing more likely to see glaciers than the poles themselves.</span>
The earths most important energy sources the sun
