In: Math
N atoms of an ideal gas are contained in a cylinder with insulating (adiabatic) walls, closed at one end by a piston.The initial volume is Vi and the initial temperature is Ti . Find the change in temperature, pressure and entropy that would occur if the volume were suddenly increased to Vf by withdrawing the piston (Vf > Vi).
In: Chemistry
Consider the following IS-LM model in a closed economy:
C = 335 + 0.3YD
I = 130 + 0.15Y − 850i
G = 350
T = 245
i = 0.04
M/P = 3.6Y − 9,250i
a. Suppose Government increased the taxes. Show the impact of this policy on IS-LM graph in Short-Run. Be explicit about the assumptions you make (which variables do not change in IS-LM relation in Short Run, which ones increase/decrease). You do not need to show exact numbers on graph, symbols are enough
b. Suppose now we are in Medium Run and the Central Bank applies an ’expansionary monetary policy’. Show the impact of this policy on IS-LM graph (not money supply money demand graph). Explain which variables in the model does not change/increases/ decreases. Explain the steps leading to these consequences. You do not need to show exact numbers on graph, symbols are enough
In: Economics
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In: Advanced Math
The following table contains data for a hypothetical closed economy that uses the dollar as its currency.
Suppose GDP in this country is $320 million. Enter the amount for government purchases.
| National Income Account | Value |
|---|---|
| (Millions of dollars) | |
| Government Purchases (GG) | |
| Taxes minus Transfer Payments (TT) | 110 |
| Consumption (CC) | 150 |
| Investment (II) | 70 |
Complete the following table by using national income accounting identities to calculate national saving. In your calculations, use data from the preceding table.
| National Saving (S)National Saving (S) | = = | |
| = = | ||
| million |
Complete the following table by using national income accounting identities to calculate private and public saving. In your calculations, use data from the initial table.
| Private SavingPrivate Saving | = = | |
| = = | million |
| Public SavingPublic Saving | = = | |
| = = | million |
Based on your calculations, the government is running a budget .
In: Economics
Consider the following data for a closed economy:
Y = $12 trillion C = $ 8 trillion G = $ 2 trillion Public Saving = -$0.50 trillion
Use the data to calculate the following.
a) Net Taxes (T)
b) Private Saving
c) Investment
d) Government budget surplus or deficit
In: Economics
This question relates to standing waves.
A) Does a closed pipe have a higher or lower fundamental frequency than an open pipe of the same length?
B) If the length of an open tube is 0.8 m, experimentally find the: fundamental frequency and the frequencies of the third and fifth harmonic.
C) We have only addressed the variables of length, wave speed, harmonic number and frequency. These seem to be adequate to fully describe the frequency of a standing wave. But we know that when a musician tightens a guitar string, the frequency of the sound changes. Which of these independent variables changes value when a string is tightened?
In: Physics
A mass of m=1kg of steam is contained in a closed rigid container. Initially the pressure and temperature of the steam are: p1= 1.5 MPa and t1=240?C, respectively. Then the temperature drops to T2 =100?C as the result of heat transfer to the surroundings. Determine: a) quality of the steam at the end of the process, b) percentage of volume that is occupied by the saturated liquid at the final state, c) heat transfer with the surroundings per unit mass of the system. For: p=1.5 MPa and T1=240?C: h1=2900KJ/kg, v1=0.1483 m3/kg while for T2=100?C: h’=419KJ/kg, v’=0.001043m3/kg and h”=2676 KJ/kg ,v”=1.672 m3/kg.
In: Mechanical Engineering
a. Explain the operation of thermodynamic systems i.e. open system and closed system with the aid of diagrams and examples.
b. Define the term 'property of a substance' in a thermodynamic system and state the main difference between intensive and extensive properties with examples.
In: Mechanical Engineering
Consider a closed economy with no government, a fixed price level, a fixed interest rate and the following characteristics:
a. What is autonomous expenditure at equilibrium? (2)
b. What is induced expenditure at equilibrium? (2)
Now suppose that investment increases to $50B.
c. What is the new level of Equilibrium GDP? (2)
d. What is the value of the multiplier? (2)
e. Briefly explain the process of convergence in the AE model. (2)
In: Economics