Which of the following accounts should be closed to the capital account at the end of the year?

In a closed system with a mobile border, a wet vapor with X = 1 is contained. The system undergoes heating keeping the plunger at rest, however the pressure and temperature change to 2MPa and 800 ° c, respectively. Subsequently, the heating process continues at constant pressure until the system reaches a temperature of 1300 ° c, generating an expansion process.
a) estimate the initial pressure of the system
b) calculate the work done by the steam
c) calculate the total heat transferred to the water vapor
d) represent the process on a T-v diagram

1. When a switch is closed in a RL circuit with a battery, which of the following statement is TRUE?

1. Back emf is maximum in the beginning and decreases exponentially with time
2. Back emf is zero in the beginning and increases exponentially with time
3. Current is maximum in the beginning and decreases exponentially with time
4. Current is zero in the beginning and increases exponentially with time

2. When an inductor is connected to an AC voltage source with V_max= 5 V and frequency, f = 100 Hz, its inductive reactance is 49 Ohms. How would you increase the inductive reactance of the inductor in the circuit?

a.increase the frequency of the voltage source

b.increase the V_max of the voltage source

c.decrease the V_max of the voltage source

d.decrease the frequency of the voltage source

3. When a capacitor is connected to an AC voltage source with V_max= 5 V and f = 100 Hz, its capacitive reactance is 35 Ohms.  How would you increase the capacitive reactance of the capacitor in the circuit?

a. increase the frequency of the voltage source

b. increase the V_max of the voltage source

c. decrease the frequency of the voltage source

d. decrease the V_max of the voltage source

4. In an LCR series circuit connected to a variable frequency AC voltage source, if the frequency is changed keeping the V_rms constant, why does the Irms in the circuit change? What is the condition for maximum I_rms in the circuit?

A gas at a pressure of 2.00 atm is contained in a closed container. Indicate the changes in its volume when the pressure undergoes the following changes at constant temperature. (Assume that the volume of the container changes with the volume of the gas.)

Part A The pressure increases to 8.50 atm . Give your answer as a factor. Vo is the original volume of the gas (container).

V1 =

In a closed economy, the supply of money may be controlled by the Central Bank in three ways: Reserve requirements , Open market operations, Discount rates.

Outline each of the three ways.

This is a closed economy. Wages are unable to adjust in the short run. At first, the economy equilibrium is at Y=Original, and P=Pe (the expected price level when managers signed contracts for nominal wages. This is a horizontal short-run aggregate supply curve.

Consider this: The government increased spending (G) by 215.

A) How will Investment (I) change in the short-run?

B) How will Consumption (C) change in the short-run?

C) How will Output (Y) change in the short-run?

D)How will Y change in the long-run?

E) How Will C change in the long-run?

F) How will I change in the long-run?

Consider the AS-AD model of a closed economy.

a. Write down the expressions for the AS and AD curves and interpret the expressions: what is the intuition behind the two curves? What must be true of the model parameters and variables in the long-run equilibrium, i.e. in the steady state?

b. Analyse the effects of a supply shock that causes a temporary increase in inflation, using a diagram. Assume that the shock lasts for one period and then assumes the value zero. Describe the mechanisms that bring the economy back to long-run equilibrium. What happens to aggregate demand?

c. Consider an economy that starts out in steady state when the central bank decides to make the inflation target more ambitious. Analyse the effects of a decrease in the inflation target from ?̅ to ?̅′. Explain the mechanisms behind the adjustment to the new steady state.

d. How would the slope of the AS and AD curves be affected if we instead were to consider an open economy? No derivations are needed, but please motivate your answer.

( X, τ ) is normal if and only if for each closed subset C of X and each open
set U such that C ⊆ U, there exists an open set V satisfies C ⊆ V ⊆clu( V) ⊆ U

1. In a closed economy with no government, the equilibrium level of income is £22 billion, the full employment level of income is £25 billion. To reach full employment would require an injection of £1 billion. Explain how could the economy reach full employment equilibrium level of income £25 billion?