Question 1

Use the following reproductive curve for a population to answer the Questions . Units are in thousands.  
-Estimate the maximum sustainable yield.

Accepted Answer

20,000

Question 2

Suppose that a nonrenewable resource is only available for a fixed supply $S$. if we are using $U$ units per year and continue using $U$ units per year, then find the expression for the static reserve.

Accepted Answer

$S / U$

Question 3

Suppose the world demand for iron is about 420,000,000 tons per year. The known global reserves are 100,000,000,000 tons. What is the static reserve for iron?

Accepted Answer

A)  93.3 
B)  128.4 
C)  238.1 
D)  420.0 
A)  93.3 
B)  128.4 
C)  238.1 
D)  420.0 C

Question 4

The population of a small town was 1200 at the beginning of 2009. Assuming an average growth rate of 4.2% per year, what will the population be at the beginning of 2019?

Accepted Answer

A)  1426 
B)  1811 
C)  2037 
D)  2139 
A)  1426 
B)  1811 
C)  2037 
D)  2139

Question 5

Use the following reproduction curve for a population to answer the Questions Units are in thousands.  
-The sustainable yield corresponding to a population of size 10,000 remaining after the harvest is approximately:

Accepted Answer

A)  10,000. 
B)  20,000. 
C)  30,000. 
D)  40,000. 
A)  10,000. 
B)  20,000. 
C)  30,000. 
D)  40,000.

Question 6

If $\ { H } _ { p } /H _ { b }$ is approximately equal to 1, then $H _ { e }$ is approximately equal to:

Accepted Answer

A)  $H _ { b }$ 
B)  $\ H_ { p }$ 
C)  $\frac { H _ { p } + H _ { b } } { 2 }$ 
D)  $\frac { H _ { p } } { 2 }$ 
A)  $H _ { b }$ 
B)  $\ H_ { p }$ 
C)  $\frac { H _ { p } + H _ { b } } { 2 }$ 
D)  $\frac { H _ { p } } { 2 }$

Question 7

The population of the state of Alaska in 1700 was about 302,583. In 2000, the population was about 634,900. What was the average growth rate over that period?

Accepted Answer

A)  0.12% 
B)  0.14% 
C)  0.19% 
D)  0.24% 
A)  0.12% 
B)  0.14% 
C)  0.19% 
D)  0.24%

Question 8

The sustainable yield corresponding to a population of size 40,000 remaining after the harvest is approximately:

Accepted Answer

A)  20,000. 
B)  30,000. 
C)  40,000. 
D)  50,000. 
A)  20,000. 
B)  30,000. 
C)  40,000. 
D)  50,000.

Question 9

A population grows according to a logistic growth model, with population parameter F1F1F1S1F1F1F10 = 4.0 and starting population fraction x = 0.7 for the first year. The value of x after the fourth year is:

Accepted Answer

A)  0.273. 
B)  0.546. 
C)  0.608. 
D)  0.994. 
A)  0.273. 
B)  0.546. 
C)  0.608. 
D)  0.994.

Question 10

A population grows according to a logistic growth model, with population parameter
F1F1F1S1F1F1F10 = 1.9 and x = 0.05 for the first year. Find the value of x after the third year.

Accepted Answer

The answer of A population grows according to a logistic...

Question 11

A population grows according to a logistic population model, with population parameter F1F1F1S1F1F1F10 = 2.2 and starting population fraction x = 0.61 for the first year. The value of x after the third year is:

Accepted Answer

A)  0.228. 
B)  0.549. 
C)  0.627. 
D)  0.724. 
A)  0.228. 
B)  0.549. 
C)  0.627. 
D)  0.724.

Question 12

In one year, a 10-gram sample of radioactive element X loses 1 gram of mass through decay. What is the half-life of element X in years?

Accepted Answer

The answer of In one year, a 10-gram sample of...

Question 13

Suppose the world demand for coal is about 2,174,000,000 tons per year and the static reserve is 2300. What are the known global reserves for coal?

Accepted Answer

5,000,200,

Question 14

A population grows according to a logistic growth model, with population parameter
F1F1F1S1F1F1F10 = 1.4 and x = 0.05 for the first year. Find the value of x after the second year.

Accepted Answer

The answer of A population grows according to a logistic...

Question 15

Suppose the world demand for coal is about 2,174,000,000 tons per year. The known global reserves are 5,000,000,000,000 tons. The demand for coal is increasing at a rate of 4.1%. What is the exponential reserve for coal?

Accepted Answer

The answer of Suppose the world demand for coal is...

Question 16

What is the name of the policy that would maintain the same yield if continued indefinitely?

Accepted Answer

sustainabl

Question 17

For an iterated function system using the function  $f ( x ) = 2 x \bmod 100$ , list the first 10 values when you start with 77.

Accepted Answer

77, 54, 8,

Question 18

Barium-122 has a half-life of two minutes. What is the decay constant? Use six decimal places with the unit $\min ^ { - 1 }$ .

Accepted Answer

The answer of Barium-122 has a half-life of two minutes....

Question 19

A population grows according to a logistic growth model, with population parameter
F1F1F1S1F1F1F10 = 1.4 and x = 0.15 for the first year. Find the value of x after the third year.

Accepted Answer

The answer of A population grows according to a logistic...

Question 20

What will happen to the growth rate as the population increases toward the carrying capacity?

Accepted Answer

The answer of What will happen to the growth rate...

Exam 23: The Economics of Resources

Use the following reproductive curve for a population to answer the Questions . Units are in thousands. -Estimate the maximum sustainable yield.

Suppose that a nonrenewable resource is only available for a fixed supply SSS . if we are using UUU units per year and continue using UUU units per year, then find the expression for the static reserve.

Suppose the world demand for iron is about 420,000,000 tons per year. The known global reserves are 100,000,000,000 tons. What is the static reserve for iron?

The population of a small town was 1200 at the beginning of 2009. Assuming an average growth rate of 4.2% per year, what will the population be at the beginning of 2019?

Use the following reproduction curve for a population to answer the Questions Units are in thousands. -The sustainable yield corresponding to a population of size 10,000 remaining after the harvest is approximately:

If Hp/Hb\ { H } _ { p } /H _ { b } Hp​/Hb​ is approximately equal to 1, then HeH _ { e }He​ is approximately equal to:

The population of the state of Alaska in 1700 was about 302,583. In 2000, the population was about 634,900. What was the average growth rate over that period?

The sustainable yield corresponding to a population of size 40,000 remaining after the harvest is approximately:

A population grows according to a logistic growth model, with population parameter  = 4.0 and starting population fraction x = 0.7 for the first year. The value of x after the fourth year is:

A population grows according to a logistic growth model, with population parameter  = 1.9 and x = 0.05 for the first year. Find the value of x after the third year.

A population grows according to a logistic population model, with population parameter  = 2.2 and starting population fraction x = 0.61 for the first year. The value of x after the third year is:

In one year, a 10-gram sample of radioactive element X loses 1 gram of mass through decay. What is the half-life of element X in years?

Suppose the world demand for coal is about 2,174,000,000 tons per year and the static reserve is 2300. What are the known global reserves for coal?

A population grows according to a logistic growth model, with population parameter  = 1.4 and x = 0.05 for the first year. Find the value of x after the second year.

Suppose the world demand for coal is about 2,174,000,000 tons per year. The known global reserves are 5,000,000,000,000 tons. The demand for coal is increasing at a rate of 4.1%. What is the exponential reserve for coal?

What is the name of the policy that would maintain the same yield if continued indefinitely?

For an iterated function system using the function f(x)=2x mod 100f ( x ) = 2 x \bmod 100f(x)=2xmod100 , list the first 10 values when you start with 77.

Barium-122 has a half-life of two minutes. What is the decay constant? Use six decimal places with the unit min⁡−1\min ^ { - 1 }min−1 .

A population grows according to a logistic growth model, with population parameter  = 1.4 and x = 0.15 for the first year. Find the value of x after the third year.

What will happen to the growth rate as the population increases toward the carrying capacity?

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Suppose that a nonrenewable resource is only available for a fixed supply $S$ . if we are using $U$ units per year and continue using $U$ units per year, then find the expression for the static reserve.

If $\ { H } _ { p } /H _ { b }$ is approximately equal to 1, then $H _ { e }$ is approximately equal to:

For an iterated function system using the function $f ( x ) = 2 x \bmod 100$ , list the first 10 values when you start with 77.

Barium-122 has a half-life of two minutes. What is the decay constant? Use six decimal places with the unit $\min ^ { - 1 }$ .