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.
Totalitarian Government is a political ideology where the state has infinite and total power and authority over everything, public or private life, and tries to expand its rule.
Answer:
The leading theory, however, as to the “why” of “say cheese” is that the “ch” sound causes one to position the teeth just so, and the long “ee” sound parts their lips, forming something close to a smile. ... It's a formula for smiling when you have your picture taken.
none hehehee
