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.
Devils tower this was the first national monument in wyoming.
A-through an optimistic viewpoint.
The data on land ownership and tree growth and removal showed that B. Tree growth and removal was the greatest on private land.
<h3 /><h3>What is the relationship between land ownership and tree removal?</h3>
In the United States, those who plant trees on private land such as timber companies, have the highest rates of tree removal as well as tree growth.
The reason for this is because the trees planted are mostly planted so that the timber companies can cut them down and use for wood products.
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The viewpoint of older residents would be one of not much complaint because they would be happy to get out of their industrial cities.
A well-educated middle-class couple with children would be very disappointed and angry with the resort's services because their education allows them to know they are getting less than they paid for.
<h3>What happens in the stagnation stage?</h3>
In the stagnation stage, a resort will no longer be as good as it used to be and competition will threaten it. Public services will be more expensive as less people come and quality of life will decrease.
Older residents would still appreciate the resort because they are more used to hardship and will appreciate relaxing a little.
Well-educated middle-class people would be angry with the poor service because they know they should be offered better for the money they paid.
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