The medium-run equilibrium is characterized by four conditions:

- Output is equal to potential output (Y=Y_n)

- The unemployment rate is equal to the natural unemployment rate (u=u_n)

- The real policy interest rate is equal to the "natural" rate of interest (the one that makes aggregate demand equal to potential output).

- The expected rate of inflation is equal to the actual rate of inflation.

(a) Assume that the level of expected inflation is formed in such a way that this year's expected inflation is equal to last year's inflation: πe=πt−1πe=πt−1. What is the behavior of the rate of inflation in a medium-run equilibrium?

Select one:

a. it will not change, meaning that the price level remains constant year after year.

b. it will be constant and equal to an exogenous constant, that does not depend on past inflation.

c. it will be increasing or decreasing depending on the value of the natural interest rate.

d. it will not change: the value of inflation is simply equal to its value in the previous period.

(b) Now assume, instead, that the level of expected inflation is equal to an exogenous constant:

πe=π¯πe=π¯

What is the behavior of actual inflation in the medium-run equilibrium?

Select one:

a. it is increasing or decreasing, depending on the value of the "natural" rate of interest

b. It is constant, and equal to its previous period.

c. It is stable and equal to the exogenous constant π¯π¯

d. inflation is increasing at a rate equal to π¯

(c) Imagine that the economy is in a medium-run equilibrium. Assume that expected inflation is equal to past inflation (πe=πt−1πe=πt−1).

In this situation, the Government decides to increase public spending (G), while leaving taxes unchanged. How will macroeconomic variables react to this fiscal expansion?

Select one:

a. output will increase; the unemployment rate and nominal wages will remain the same (equal to the values determined by the WS-PS model); the inflation rate will start increasing year after year.

b. output will decrease; the unemployment rate and nominal wages will remain the same (equal to the values determined by the WS-PS model); the inflation rate will start decreasing year after year.

c. output will increase; the unemployment rate will decrease; nominal wages will remain the same; the inflation rate will start increasing year after year.

d. output will increase; the unemployment rate will decrease; the growth rate of nominal wages and the inflation rate will start increasing year after year.

(d) How must the Central Bank react to the increase in G, in order to ensure that the economy sticks to the medium-run equilibrium?

Select one:

a. it must increase the interest rate.

b. it must decrease the interest rate.

c. it must ensure that the interest rate remains unchanged.

d. it must do nothing: output is already equal to potential output.

e. it must increase taxes.

A union leader in the Maritime Workers' Union believed that workers at the Port of Brisbane were receiving a lower weekly salary than workers at Port Kembla. To determine whether this claim was valid, they took samples of size 17 and 11 in Brisbane and Port Kembla, respectively, and found that the average and standard deviation of the weekly salaries were $914.11 and $49.38 respectively in Port Kembla, and $859.23 and $55.62 in Brisbane. Use Brisbane minus Port Kembla, and answer correct to two decimal places. 1. Determine a point estimate for the difference in the average weekly salary between the two ports. ? 2. Calculate the standard error for the difference between sample means assuming that the workers' salaries in both locations are normally distributed and have the same population variance. ? 3. Use Kaddstat to determine a 95% confidence interval for the difference between the mean weekly salaries in Brisbane and Port Kembla. lower limit ? upper limit ?

A 200.0 mL buffer solution is 0.260 M in acetic acid and 0.260 M in sodium acetate.

1) What is the initial pH of this solution?

2) What is the pH after addition of 0.0100 mol of HCl?

3) What is the pH after addition of 0.0100 mol of NaOH?

in C++, given a binary search tree of ints, in which each node contains a size parameter (also an int), explain, in English, not code, how you would find the median element of the tree in theta(log N) time.

It describes the properties of dangerous goods, but which of the following is incorrect? (1) Yellow phosphorus is a white or pale yellow aromatic waxy solid. (2) Calcium phosphide is a reddish brown lump and reacts with water to produce toxic gas. (3) Calcium carbide is pure white solid. When nitrogen is passed at a constant temperature, it becomes lime nitrogen. (4) Sodium is a bright silver-white metal with a specific gravity of less than 1. (5) Potassium is a bright silver-white soft metal with a specific gravity of less than 1 and a lower melting point and boiling point than sodium.

1) For the following hypothetical changes in astronomical bodies answer whether the change would make the specified property Larger, Smaller, or Not Changed.

If the radius of the Earth were larger, the force of gravity on objects on its surface would be .....
Larger Smaller Not Changed  

If the mass of the Sun were half as much and the Earth kept the same distance, the period of the Earth's orbit would be .....
Larger Smaller Not Changed  

If the mass of an object dropped on the surface of the Moon were increased, the acceleration of the object would be .....
Larger Smaller Not Changed

If the amount of ozone in the upper atmosphere of a planet is increased the amount of ultraviolet light reaching the surface will be ....
Larger Smaller Not Changed  

If the mass of Mars were greater, the acceleration due to gravity on its surface would be .....
Larger Smaller Not Changed  

If the distance between two planets is increased, the force of gravity is .....

2)

Classify the following statements as True or False based on the Nebular Theory for Solar System formation.
True /False  Rocky, metallic materials as well as volatile materials (He and H compounds) collected into planets near the Sun where the cloud is hot.
True/ False  Material for the planets was left over from the formation of the Sun.
True /False  Most of the thermal energy which started fusion reactions in the Sun originated as thermal energy in the large, hot dark nebula.

A piston contains 600 moles of an ideal monatomic gas that initally has a pressure of 2.44 × 105 Pa and a volume of 1.8 m3. The piston is connected to a hot and cold reservoir and the gas goes through the following quasi-static cycle accepting energy from the hot reservoir and exhausting energy into the cold reservoir. The pressure of the gas is increased to 5.44 × 105 Pa while maintaining a constant volume. The volume of the gas is increased to 8.8 m3 while maintaining a constant pressure. The pressure of the gas is decreased to 2.44 × 105 Pa while maintaining a constant volume. The volume of the gas is decreased to 1.8 m3 while maintaining a constant pressure. It may help you to recall that CV C V = 12.47 J/K/mole and CP C P = 20.79 J/K/mole for a monatomic ideal gas, and that the number of gas molecules is equal to Avagadros number (6.022 × 1023) times the number of moles of the gas. 1) How much energy is transferred into the gas from the hot reservoir? J 2) How much energy is transferred out of the gas into the cold reservoir? J 3) How much work is done by the gas? J 4) What is the efficiency of this cycle?

Explain, If a device is configured with bandwidth and duplex settings on automatic, does the device at the other end of the connection have to be set to automatic as well?Explain, If a device is configured with bandwidth and duplex settings on automatic, does the device at the other end of the connection have to be set to automatic as well?

Describe how congestion taxes have been implemented in different cities.

Which regions of the U.S. have been affected the most by the recession? What are the main reasons for their economic downfall? What is the poverty rate in America? Which groups of the population have been affected the most? Which regions?

How does the U.S. compare with the rest of the rich countries in the world in terms of poverty rates and middle-class income?

An outer wall is covered by insulating material in order to reduce heat loss. Across which layer (bricks or insulation) is the temperature drop is the largest?

7. A 1100-kg car is moving toward the north along a straight road at a speed of 20.0 m/s. The driver applies the brakes and the car comes to rest in a distance of 140 m.

(a) If the road is completely level, what is the constant force applied to the car to bring it to rest? (Remember to specify the direction.)

(b) If the road goes down a hill at a 4� angle with respect to the horizontal, what is the constant force applied to the car to bring it to rest?

(c) What is the source of the force that brings the car to rest? (In other words, what is exerting the force on the car?) Explain your answer clearly.

Create a script that take a directory path from the user. What I want you to do is figure out the total size of all files in the directory. You will need to import the os module for this.

• dirs=os.listdir(DIRECTORY) where DIRECTORY is the direction you want to look at will return a list of all files in that directory.
• You can then use a for loop to go through dirs much like you went through a range in the previous examples you saw. Start by doing this and printing out the name of each file found.
• Once you have that working create a total variable and use os.path.getsize(FILE) where FILE is the file's size you want to add the file size to total.
• Print out the total size for all files in the directory. Note that the result is in bytes.
• Use an if statement to print the total out in KB if the total is over 1024. If it is not, simply print the total in bytes.
• Finally add to your program to also calculate the average size of a file in the given directory.

b)Social
c)Technological
d)Market
e)None. All of the above are major kinds of globalization drivers

a)existed before the time of Christ.
c)B and D.
d)was influenced by the rise of the Ottoman Empire.

b)more liberal
c)harsher
d)more confronting
e)A and C

b)if they are going to work in a firm with no foreign operations.
c)Neither A nor B because they can learn on the job.
d)Both A and B.

8.International business differs from domestic business in that a firm operating across borders must deal with

b)C and D.
c)the foreign environment.
d)the international environment.
e)the domestic environment.

b)international business.
c)the Pacific Rim.
d)foreign exchange.

Develop a simple GUI-based Java program that may be used to control a lighting system