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### EC1301-2009-2

Course: ECONOMICS ec1301, Spring 2009
School: National University of...
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1301 2008/2009 EC Principles of Economics Tutorial No. 2 For Week Beginning 2nd February Semester 2 Multiple-Choice Questions Use the following diagram to answer questions 1-5. P 16 D1 12 10 8 D2 4 2 4 6 8 12 20 1. The slope of the demand curve D1 is ___ and of the demand curve D2 is ___ . a. 1/2, 2 b. 2, 1/2 c. 5/4, 4/5 d. 4/5, 5/4 e. None of the above. 2. When the P = 8, the price elasticity of demand...

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1301 2008/2009 EC Principles of Economics Tutorial No. 2 For Week Beginning 2nd February Semester 2 Multiple-Choice Questions Use the following diagram to answer questions 1-5. P 16 D1 12 10 8 D2 4 2 4 6 8 12 20 1. The slope of the demand curve D1 is ___ and of the demand curve D2 is ___ . a. 1/2, 2 b. 2, 1/2 c. 5/4, 4/5 d. 4/5, 5/4 e. None of the above. 2. When the P = 8, the price elasticity of demand for the demand curve D1 is ___ and D2 is ___ . a. 4, 1 b. 1, 4 c. 4, 4 d. 1, 1 e. None of the above. 3. The cross price elasticity of demand for x is found to be -0.7. This means x a. is a normal good. b. has inelastic demand. c. is a complementary good. d. has a substitute good e. is an inferior good. 4. In a free market, if the price of a good is above the equilibrium price, then a. government needs to set a higher price.. b. suppliers, dissatisfied with growing inventories, will raise the price. c. demanders, wanting to ensure they acquire the good, will bid the price lower. d. government needs to set a lower price. e. supplies, dissatisfied with growing inventories, will lower the price. 5. Refer to Figure 4.1 that shows Mary and Tom's individual demand curves for meals per week at Fratelli's Italian restaurant. Assuming there are two customers like Mary and 1 customer like Tom in the market, what is the market quantity demanded at a price of \$15? a. 1 b. 2 c. 3 d. 5 e. 12 6. When the price of x increases from \$75 to \$125, it leads to an in decrease quantity demanded from 450 units to 350 units. The price elasticity of demand for x is ___ (using midpoint formula) so that the supply curve is ___ . a. 2, undetermined b. 2, inelastic c. 4/3, elastic d. 3/4, inelastic e. 1/2, undetermined 7. A cake shop observes that when it raises the price of cakes, total revenue decreases. This suggests a. cake lovers act rationally. b. the demand for cakes must be elastic. c. there are few good substitutes for cakes. d. the demand for cakes must be inelastic. e. None of the above. 8. Suppose that, the price elasticity of supply for the Mona Lisa is zero. Therefore, supply curve for the Mona Lisa is a. elastic. b. inelastic. c. unitary elastic. d. perfectly elastic e. perfectly inelastic. True/False Questions Price 1 2 3 4 5 Quantity Demanded 1000 900 500 300 100 Quantity Supplied 100 350 500 1000 1200 Consider the free market represented by the schedule in Table above, at the price of \$2 per unit, 1. ________________ At a price floor of \$2, 350 will be sold 2. ________________ At a price floor of \$4, 300 will be sold. 3. ________________ The market equilibrium price is \$3 Short Answer Questions 1) Given the volatile price changes of oil in the past few months, discuss the situation using a. demand and supply analyses eg. Identify the appropriate demand and supply factors and graphically describe. b. elasticity analyses eg. What do the demand and supply curves look like in the short and long run?
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National University of Singapore - ECONOMICS - ec1301
2008/2009EC 1301 Principles of Economics Tutorial No. 1 For Week Beginning 26th JanSemester 2Multiple Choice Questions 1. Scarcity exists because of a. unlimited wants and limited resources. b. the market mechanism. c. price ceilings d. price f
CSU Fullerton - PHYSICS - 226
Chapter 211 The magnitude of the force that either charge exerts on the other is given by F= 1 jq1 jjq2 j ; 40 r2where r is the distance between them. Thus s jq1 jjq2 j r= 40 F s (8:99 109 N m2 =C2 )(26:0 106 C)(47:0 106 C) = 1:38 m : = 5:70
CSU Fullerton - PHYSICS - 226
Chapter 223 Since the magnitude of the electric field produced by a point particle with charge q is given by E = jqj=40 r2 , where r is the distance from the particle to the point where the field has magnitude E, the magnitude of the charge is jqj
CSU Fullerton - PHYSICS - 226
Chapter 231 ~ ~ The vector area A and the electric field E are shown on the diagram to the right. The angle between them is 180 35 = 145 , ~ so the electric flux through the area is = E A = EA cos = 3 2 (1800 N=C)(3:2 10 m) cos 145 = 1:5 10
CSU Fullerton - PHYSICS - 226
Chapter 243 (a) An ampere is a coulomb per second, so s Ch 3600 = 3:0 105 C : 84 A h = 84 s h(b) The change in potential energy is U = q V = (3:0 105 C)(12 V) = 3:6 106 J.5 The electric field produced by an infinite sheet of charge has m
CSU Fullerton - PHYSICS - 226
Chapter 255 (a) The capacitance of a parallel-plate capacitor is given by C = 0 A=d, where A is the area of each plate and d is the plate separation. Since the plates are circular, the plate area is A = R2 , where R is the radius of a plate. Thus 0
CSU Fullerton - PHYSICS - 226
Chapter 267 (a) The magnitude of the current density is given by J = nqvd , where n is the number of particles per unit volume, q is the charge on each particle, and vd is the drift speed of the particles. The particle concentration is n = 2:0 108
CSU Fullerton - PHYSICS - 226
Chapter 277 (a) Let i be the current in the circuit and take it to be positive if it is to the left in R1 . Use Kirchhoffs loop rule: E1 iR2 iR1 E2 = 0. Solve for i: i= 12 V 6:0 V E1 E2 = 0:50 A : = R1 + R2 4:0 + 8:0 A positive value was ob
CSU Fullerton - PHYSICS - 226
Chapter 283 (a) The magnitude of the magnetic force on the proton is given by FB = evB sin , where v is the speed of the proton, B is the magnitude of the magnetic field, and is the angle between the particle velocity and the field when they are d
CSU Fullerton - PHYSICS - 226
Chapter 297 (a) If the currents are parallel, the two magnetic fields are in opposite directions in the region between the wires. Since the currents are the same, the net field is zero along the line that runs halfway between the wires. There is no
CSU Fullerton - PHYSICS - 226
Chapter 305 The magnitude of the magnetic field inside the solenoid is B = 0 nis , where n is the number of turns per unit length and is is the current. The field is parallel to the solenoid axis, so the 2 2 flux through a cross section of the sole
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Texas A&M - AERO - 320
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&lt;?xml version=&quot;1.0&quot; encoding=&quot;UTF-8&quot;?&gt; &lt;Error&gt;&lt;Code&gt;NoSuchKey&lt;/Code&gt;&lt;Message&gt;The specified key does not exist.&lt;/Message&gt;&lt;Key&gt;72dcb61f7863a404f9b49ddb9907375b89e9d0cd.doc&lt;/Key&gt;&lt;RequestId&gt;1 C3A5BA4DE7C7654&lt;/RequestId&gt;&lt;HostId&gt;BXIwgrx/DTvJgq1D4HpYMwnV2v63LdXr
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&lt;?xml version=&quot;1.0&quot; encoding=&quot;UTF-8&quot;?&gt; &lt;Error&gt;&lt;Code&gt;NoSuchKey&lt;/Code&gt;&lt;Message&gt;The specified key does not exist.&lt;/Message&gt;&lt;Key&gt;817e699cc005d2b607efc1ea677aa8192d1e55aa.doc&lt;/Key&gt;&lt;RequestId&gt;C 5CCB33F44E20BE0&lt;/RequestId&gt;&lt;HostId&gt;45BkBcKQP266rfjxbNIFHk8XuCWvRJNw
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University of Toronto - PSYCH - Lab
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Cornell - BIOEE - 2740
The Vertebrates: Structure, Function and Evolution (BIOEE 2740) Lab 4 Osteichthyes, the bony fishes.Major concepts The two major divisions within the Osteichthyes are the Sarcopterygii, the lobe-finned fishes, and the Actinopterygii, the ray-finne
Cornell - BIOEE - 2740
The Vertebrates: Structure, Function and Evolution (BIOEE 2740) Lab 2 Invertebrate relatives of the vertebrates and the jawless craniatesGoals for this lab: 1. Learn what morphological features define the major deuterostome groups, and how these gr
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Bentley - SC - 424111
Evolutionary Mechanisms - 1 The Gene Pool and Genetic Equilibrium As we stated at the beginning of our discussion on evolutionary principles, evolution involves changes that occur in the frequency of a gene's alleles in a population from generation t
Bentley - SC - 424111
Principles of Evolution - 1 We have seen in this course that recombination, segregation of alleles, and independent assortment of homologous chromosomes during meiosis results in the variation that occurs among individuals in populations. We have see
Bentley - SC - 420112
(Electrostatic)- 2 - - + () q1q2 F 2 r1 4 0q1q2 F =k 2 rk== 8.9875 10 9 N .m 2 / C 2 9 10 9 N .m 2 / C 2 F Fq1q2 F21 = F12 = k 2 r F21 2 1 F12 1
Bentley - SC - 420112
2 Wa = mgya a bWa = qEy a Wb = qEybWb = mgybW = W f Wi = qE (l f li )W = Wb Wa = qE ( yb ya ) negativeW = Wb Wa = qE ( yb ya ) positiveW = Wb Wa = qE ( yb ya ) positiveW = Wb Wa = qE ( yb ya ) negative
Bentley - SC - 420112
Q V Q = CVQ C= V Q C= V coulomb = [Farad ] Volt 1 F = 106 F = 1012 pF A EA = = 0 0QQ C= VQ E= A 0V = EdQd E= A 0Q 0 A 0 A = C = Qd d L ra &lt; r &lt; rbr ra rbL E ( 2rL) = = 0 0Qra
Bentley - SC - 420112
(J) V 1 (junction rule) I = 0I1 = I2 + I3 2 (loop rule) I 3 + - -+ +- + I-+V =05 2 2I 3I 2I = 07I = 33 I = 7 3/7 4 +2 2- + I2 (1) 6 I1 = 4 + 2 I 2I1 =
Bentley - SC - 420112
P - P - dsR d z 1. 2. 3. 4. vBmv r= qB mv sin = qBvvB s = v/ t= (v cos )tvv B = v sin v/ B = v cos B B2m s = (v cos ) qB 2m t T = qB
Bentley - SC - 420112
N y x ? 1t dv v0 v = 0dtv exponential . . . . +. . .+ . dr. . .+. . .- -. - - r . . . .- - . . .+ . . . + . R . . . .. +. . . + . . +.
Bentley - SC - 420112
1. 2. E=Q 4 0 r 2Q2 EdA =4 0 r vvQ E dA = 4r 2(1)vv B dA = 0(2)03.I4.-d B V = N v v dt V = E dlvv vv B dA (3) E dl = t l(4) v E = E ( x, t ) j v B = B ( x, t )k R L L
Bentley - SC - 420112
nj1.rrrj 2.nj1rn j n ojn } noEQ 4SH 0 r 2Q 4SH 0 r 2 *Q E dA u 4Sr 2(1)nj EdA B dA**0(2)H0rr3.njnjnjn * E E x, t j *B B ( x , t )krI4.r-rrrnj n or r r r* E dl d) B V N * * dt V E
Bentley - SC - 420112
=vt AA i BB r AAB BBA AB BA AB iri = r(1 ) OAB IAB OB = IB d o = d i (2 ) C A B OCB IC B OC = IC ho = hi(3 ) 1 1.60 . 10 .E
Bentley - SC - 420112
1. 1.1 Youngs Experiment c = 3 = 90 b = 2 a = 1 = d sin = m , m = 0,1, 2, . (1) 1 = d sin = m + , m = 0,1, 2, . (2) 2 m ym = tan m L y m = L tan m tan m sin m my m = L
Bentley - SC - 420112
11 1. 20 1900 1920 Schrodinger Heisenberg 19 20 2. R = R( )d0 R ( ) 1. 2. T R Rmax shot m 1 T b m = (1) T b = 2.898 10 3 m.K m 3. R = T 4 (2) = 5.67 10 8 W / m 2 K 4 (Wien's Displacemen
Bentley - SC - 420112
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Bentley - SC - 420112
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fav f(x) 1 f av = f ( x ) = x2 x1x2 f ( x )dxx1V (t ) = V p sin t1T Vav = V (t ) = 0Vp sin tdt T 0Vp 2 = cos T T t 0T=0 (effective value) (root mean square, rms) V (t ) = V p sin t(V (t ) )2 = Vp 2 sin2 tV2
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Kasetsart University - SC - 424111
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