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.
The answer is....
C To identify similarities between different religions
<u>Answer:</u>
Strict immigration laws did not influence the economic development of the United States.
<u>Explanation:
</u>
- Though the United States adopted strict immigration laws in order to filter the unwanted immigrants from flooding the country, many others who could comply with these laws moved to the United States and contributed to its growth and prosperity.
- The laws put up certain criterions that only allowed deserving people to flow in.
- Thus, strict immigration laws did not directly influence the functioning of the overall economy.
The water table rises and falls with precipitation. The correct option among all the options that are given in the question is the first option or option "a". It is important to know what a water table is. It is basically the level below which the ground water that is present is always in a saturated condition. I hope it helps you.
