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3 Pages

### 104f08-EX2_C

Course: PHYS 104, Fall 2008
School: Wisconsin
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Word Count: 1142

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104 Physics Exam 2 October 30, 2008 Name__________________________________________ ID #____________________ Section #______________ TA Name_________________________________________ Fill in your name, student ID # (not your social security #), and section # (under ABC of special codes) on the Scantron sheet. Fill in the letters given for the first 5 questions on the Scantron sheet. These letters determine which...

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104 Physics Exam 2 October 30, 2008 Name__________________________________________ ID #____________________ Section #______________ TA Name_________________________________________ Fill in your name, student ID # (not your social security #), and section # (under ABC of special codes) on the Scantron sheet. Fill in the letters given for the first 5 questions on the Scantron sheet. These letters determine which version of the test you took, and it is very important to get this right. Make sure your exam has questions 625. 1. C 2. E 3. B 4. D 5. A 6. Charged particles flow in a straight line with a constant velocity. Their current is uniformly distributed over a circular area in the plane perpendicular to the motion. The magnetic force on these particles a. is everywhere inward (toward the center of the circle) in the plane perpendicular to the direction of motion. b. is zero because the particles produce a magnetic field that is wholly outside the region of current. c. is zero even though the particles produce a magnetic field in the region of current. d. is in the direction that opposes the current flow. e. is everywhere outward (away from the center of the circle) in the plane perpendicular to the direction of motion. 7. Niobium metal becomes a superconductor (with electrical resistance equal to zero) when cooled below 9 K. If superconductivity is destroyed when the surface magnetic field exceeds 0.100 T, determine the maximum current a 6.00-mm-diameter niobium wire can carry and remain superconducting. (0 = 4 107 Tm/A) a. 187.5 A b. 4 712 A c. 750 A d. 375 A e. 1 500 A 8. A copper wire of length 25 cm is in a magnetic field of 0.20 T. If it has a mass of 20 g, what is the minimum current through the wire that would cause a magnetic force equal to its weight? a. 2.6 A b. 4.0 A c. 3.0 A d. 9.8 A e. 2.0 A 9. A solenoid with 500 turns, 0.10 m long, carrying a current of 42.0 A, and with a radius of 102 m will have what strength magnetic field at its center? (magnetic permeability in empty space 0 = 4 107 Tm/A) a. 16 104 T b. 40 104 T c. 126 104 T d. 62 104 T e. 31 104 T 10. A circular current loop is placed in an external magnetic field. How is the torque related to the radius of the loop? a. directly proportional to radius b. directly proportional to radius squared c. inversely proportional to radius d. does not depend on the radius e. inversely proportional to radius squared 11. A 5-turn square coil of area 0.036 m2 and a 20-turn circular coil are both placed perpendicular to the same changing magnetic field. The voltage induced in each of the coils is the same. What is the area of the circular coil? a. 0.009 m2 b. 0.30 m2 c. 0.018 m2 d. 0.06 m2 e. 0.036 m2 12. A 500-turn circular coil with an area of 0.050 0 m2 is mounted on a rotating frame, which turns at a rate of 20.0 rad/s in the presence of a 0.10 0-T uniform magnetic field that is perpendicular to the axis of rotation. What is the instantaneous emf in the coil at the moment that the normal to its plane is at a 90.0 angle to the field? a. 25.0 V b. 43.2 V c. zero d. 50.0 V e. 500 V 13. A 12-V battery is connected in series with a switch, 12.0- resistor and coil. What energy is stored in the coil when the current is 2.0 A? The time constant is 4.0 104 s. a. 28 103 J b. 19.2 103 J c. 9.6 103 J d. 192 103 J e. 58 103 J 14. In a circuit made up of inductor, resistance, ammeter, battery and switch in at series, which of the following times after the switch is closed is the rate of current increase greatest? a. zero b. one time constant c. ten time constants d. reciprocal of one time constant e. in the limit that the time goes to infinity 15. A coil with a self-inductance of 0.75 mH experiences a constant current buildup from zero to 20 A in 0.25 s. What is the induced emf during this interval? a. 0.090 V b. 0.94 V c. 0.004 V d. 0.038 V e. 0.060 V 16. A resistor, capacitor, and inductor are wired in series with a voltage generator that produces a voltage varying sinusoidally in time with any desired frequency. A certain frequency is called the resonance frequency. This frequency is a. is given by the inductance divided by the resistance. b. is given by the inverse of the product of resistance and capacitance. c. the frequency at which the power dissipated in the resistor is minimum d. the frequency at which the power dissipated in the resistor is maximum. e. the only frequency at which the generator can successfully impose a voltage drop over the other elements of the circuit. 17. What is the impedance of an AC series circuit that is constructed of a 10.0- resistor along with 15.0 inductive reactance and 10.0 capacitive reactance? a. 11.2 b. 27.0 c. 37.0 d. 27.7 e. 125 18. A radio wave signal, which transmits at a frequency of 3.60 MHz, has what wavelength? (c = 3.00 108 m/s) a. 83.3 m b. 57.6 m c. 8.34 m d. 5.76 m e. 4.8 102 m 19. An AC series circuit has 12.0 resistance, 15.00 inductive reactance and 10.00 capacitive reactance. If an effective (rms) emf of 240 V is applied, what is the effective (rms) current value? a. 10.62 A b. 18.46 A c. 1.42 A d. 21.6 A e. 52.0 A 20. Consider an AC series circuit containing a coil, capacitor and resistance. Doubling the frequency will change the inductive reactance by what factor? a. 1/2 b. 4 c. 1.0 d. 1/4 e. 2.0 21. An oil film floats on a water surface. The indices of refraction for water and oil, respectively, are 1.333 and 1.466. If a ray of light is incident on...

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Wisconsin - PHYS - 104
Physics 104 Exam 2October 30, 2008Name_ ID #_ Section #_ TA Name_ Fill in your name, student ID # (not your social security #), and section # (under ABC of special codes) on the Scantron sheet. Fill in the letters given for the first 5 questions
Wisconsin - ENGR - 724
E vectors. k is in +y-direction0 1 2 1y-po sZor 3 phas e0.5angle4 50 0 6 1 0.5 os p x-XYJi vectors0 1 2 1y-po sZor 3 phas e0.5angle4 50 0 6 1 0.5 os p x-XYJe vects (antiparallel to Ve) Same magnitude scale as
Wisconsin - ENGR - 724
NEEP/ECE/Physics 724 Fall 2005 Homework #4: Electrostatic Appr., Group Velocity Assigned: Thursday, 9/29/05 Due: Tuesday, 10/11/051. At high frequency ( &gt; ce and &gt; pe ) in typical ( ce &gt; ci ) quasineutral plasmas, ion motion can be neglected,
Wisconsin - ENGR - 724
NEEP/ECE/Physics 724 Fall 2005 Homework #5: Faraday Rotation, Energy Transfer Assigned: Thursday, 10/13/05 Due: Thursday 10/20/051. When discussing eikonal solutions for waves traveling across gradually varying conditions, we noted that the change o
Wisconsin - ENGR - 724
NEEP/ECE/Physics 724 Fall 2005 Homework #3: CMA Diagram, Wave Normal Surfaces Assigned: Thursday, 9/22/05 Due: Thursday, 9/29/051. In class, we used the bounding surfaces of the CMA diagram to sketch plots of (k ) for the principal propagation dire
Wisconsin - ENGR - 724
Equilibrium B vectors0 1 2 1y-po sZor 3 phas e0.5angle4 50 0 6 1 0.5 os p x-XYB vectors (in x-direction) E vectors (in y-z plane)0 1 2 1y-po sZor 3 phas e0.5angle4 50 0 6 1 0.5 os p x-XYV vectors (in y-z, |Vz
Wisconsin - ENGR - 724
Equilibrium B vectors0 1 2 1y-po sZor 3 phas e0.5angle4 50 0 6 1 0.5 os p x-XYB vectors E vectors (in x-direction)0 1 2 1y-po sZor 3 phas e0.5angle4 50 0 6 1 0.5 os p x-XYV vectors and pressure red=max, blue=
Wisconsin - ENGR - 724
Equilibrium B direction0 1 2 1y-po sZor 3 phas e0.5angle4 50 0 6 1 0.5 os p x-XYB vectors (perturbation) E vectors (perturbation)0 1 2 1y-po sZor 3 phas e0.5angle4 50 0 6 1 0.5 os p x-XYV vectors and pressure
Wisconsin - ENGR - 724
Magnetoacoustic waveShear wave Sound wave Slow branchAlfven wavesFast branchWave-normal surfaces (radius=/ck) for the MHD model with =12%. The equilibrium B is aligned with the horizontal line, and is the angle between the k-vector (directe
Wisconsin - ENGR - 724
beta=0.01, theta=0.35*pi8 6beta=0.01, theta=0.4*pilog(omega)6 0 2 log(omega)402-101234548 86log(omega)log(omega)420-2-1012345-202468log(k)
Wisconsin - ENGR - 724
beta=0., theta=0.35*pi6 4beta=0., theta=0.4*pilog(omega)4 6 -2 0 log(omega)2-20-10123452log(k)beta=0., theta=0.45*pi4 6log(omega)log(omega)20-2-1012345-20246log(k)
Wisconsin - ENGR - 724
beta=1.e-6, theta=0.35*pi5 4beta=1.e-6, theta=0.4*pilog(omega)3 4 5 -2 -1 0 log(omega)32-2-101024612log(k)beta=1.e-6, theta=0.45*pi5 4 3log(omega)log(omega)210-1-20246-2-1012
Wisconsin - ENGR - 724
Wisconsin - ENGR - 724
Wisconsin - ENGR - 724
Wisconsin - ENGR - 724
Wisconsin - ENGR - 724
Wisconsin - ENGR - 724
Wisconsin - ENGR - 724
B vectors +y propagation E vectors polarization 10 1 2 1y-po sZor 3 phas e0.5angle4 50 0 6 1 0.5 os p x-XYB vectors +y propagation E vectors polarization 20 1 2 1y-po sZor 3 phas e0.5angle4 50 0 6 1 0.5 os p x-X
Wisconsin - ENGR - 724
E vectors. k is in +y-direction0 1 2 1y-po sZor 3 phas e0.5angle4 50 0 6 1 0.5 os p x-XYJi vectors0 1 2 1y-po sZor 3 phas e0.5angle4 50 0 6 1 0.5 os p x-XYJe vects (antiparallel to Ve) Magnitude is decreased
Wisconsin - ENGR - 724
Equilibrium B vectors0 1 2 1y-po sZor 3 phas e0.5angle4 50 0 6 1 0.5 os p x-XYB vectors E vectors (in x-direction)0 1 2 1y-po sZor 3 phas e0.5angle4 50 0 6 1 0.5 os p x-XYV vectors (in y-z, |Vz|&gt;|Vy|) pressur
Wisconsin - ENGR - 724
Equilibrium B direction0 1 2 1y-po sZor 3 phas e0.5angle4 50 0 6 1 0.5 os p x-XYB vectors (perturbation) E vectors (perturbation)0 1 2 1y-po sZor 3 phas e0.5angle4 50 0 6 1 0.5 os p x-XYV vectors and pressure
Wisconsin - ICE - 1982
8903 - ByrdLocation: 80 degrees S, 120 degrees W. Elevation 1530 meters.Hex id:8B1DCPower:6 VDC supplied by RTGAerovane:Old was 3-78-014. Wind direction polarity verified before removal. New is 00-00-01.Deployed:8 December 81
Wisconsin - ICE - 1985
AWS ID: 8910B SITE NAME: SIPLELOCATION : LAT 75.90 S LONG 83.30 W SIPLE STATION HEIGHT : 900 M (ESTIMATED)DATE ACTIVATED: 26 NOVEMBER 1983 LAST VISITED : 26 NOVEMBER 1983SENSORS SERVICEDSENSOR PROBLEM ACTION TAKENAEROVA
Wisconsin - ICE - 1986
Site: Larsen Ice ShelfOperation:AWS 8926 was tested and found to be functioning well. It was deployed 1 January 1986. The unit was positioned next to the previously installed AWS unit. The top two tower sections, sensors, and the elect
Wisconsin - PUB - 1986
Site: Larsen Ice ShelfOperation:AWS 8926 was tested and found to be functioning well. It was deployed 1 January 1986. The unit was positioned next to the previously installed AWS unit. The top two tower sections, sensors, and the elect
Wisconsin - ICE - 1990
Site:ShristiPerformance:Wind speed and direction intermittent from 27 Feb to 30 Apr when all the wind data was judged incorrect. Wind speed and direction started working properly on 3 Dec.
Wisconsin - ICE - 1987
Site:GillPerformace:24 Jan 85. On 25 Jul 87 wind direction failed due to broken weld on aerovane post.
Wisconsin - ICE - 1983
Whitlock SiteAWS 891325/01/8376.08 S, 168.33 E, 221 m (By barometric difference)Aerovane 00-00-00 Left in place because screws would not come outField Calibration;ItemTest SetMeasuredCorrectionAir temperature -4.8 C -4.5 C +0
Wisconsin - ICE - 1990
Site:Martha IIPerformance:Wind speed and direction not working between 16 Oct and 21 Nov.
Wisconsin - ICE - 1990
Site:PatPerformance:The tower was down until raised by the Italians on 1 Feb after which the wind speed and direction data were okay.
Wisconsin - PUB - 1990
Site:PatPerformance:The tower was down until raised by the Italians on 1 Feb after which the wind speed and direction data were okay.
Wisconsin - ICE - 1987
Site:Larsen IcePerformace:01 Jan 86. On 01 Jul 87 wind direction failed for unknown reasons. On 10 Oct 87 transmission became intermittent due to low battery voltage.
Wisconsin - PUB - 1987
Site:Larsen IcePerformace:01 Jan 86. On 01 Jul 87 wind direction failed for unknown reasons. On 10 Oct 87 transmission became intermittent due to low battery voltage.
Wisconsin - CHEM - 860
Chem 860. Lecture 6Algorithms for MD-III: Statistical error analysis February 9, 20091Analysis of statistical errorBy statistical error, we mean that simulations may not be suciently long to contain enough statistically uncorrelated data to gi
Wisconsin - CHEM - 562
Chem 562. Lecture 30-31Statistical Mechanics. I. Non-interacting systems November 27, 2007In previous lectures, we have discussed quantum mechanics, which can be used to study any property of a single molecule - its structure, vibrational frequenc
Wisconsin - CHEM - 562
Chem 562. Problem Set 2Fundamentals of Quantum Mechanics Sept. 14. 2007; Due Sept. 21. 20071Problems1. Probability density Pb. 8.5 in Atkins: The ground state wavefunction of a hydrogen1 atom is: (r, , ) = a3 er/a0 where a0 = 53pm (the Bohr ra
Wisconsin - CHEM - 562
Chem 562. Lecture 23Molecular Spectroscopy. II. Vibrational and Ro-vibrational spectroscopies October 28, 20051Vibrational SpectroscopyOnce again, we start with the simple diatomic molecule A-B. The only variable relevant to the vibration of t
Bard College - CMSC - 116
Vignettes Robert McGrail Introduction Radio Buttons Divide and Conquer RSSPHP, XML, and XSLT VignettesRobert McGrailReem-Kayden Center for Science and Computation Bard College Annandale-on-Hudson, NY 12504April 21, 2008Robert McGrailVignett
Bard College - CMSC - 116
Design PrinciplesRobert W. McGrail CMSC 116: Semantic WebReem-Kayden Center for Science and Computation 31 Campus Road Bard College Annandale-on-Hudson, NY 12504mcgrail@bard.edu|2DesignPrinciples.nbOverviewThe Entity-Relationship diagram i
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From ERD to Relational DesignsRobert W. McGrail CMSC 116: Semantic WebReem-Kayden Center for Science and Computation 31 Campus Road Bard College Annandale-on-Hudson, NY 12504mcgrail@bard.edu|2ERToRel.nbOverviewBasic ProgramEntity Sets to
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Add, Delete, Update Robert McGrail Introduction RSS Example Adds Deletes UpdatesAdding, Deleting, and Updating Records in SQLRobert McGrailReem-Kayden Center for Science and Computation Bard College Annandale-on-Hudson, NY 12504May 12, 2008Ro
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XPath for Tree Traversal Robert McGrail Introduction Lab Lessons Methodology Descent AscentXPath for Tree TraversalRobert McGrailReem-Kayden Center for Science and Computation Bard College Annandale-on-Hudson, NY 12504February 24, 2008Robert
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Introduction to PHP Robert McGrail Introduction PHP Basics Variables Conditionals Loops Example: FormsIntroduction to PHPRobert McGrailReem-Kayden Center for Science and Computation Bard College Annandale-on-Hudson, NY 12504April 13, 2008Robe
Bard College - CMSC - 116
PHP and SQL Robert McGrail Introduction MVC SQL PHP and PostgreSQLPHP and PostgreSQLRobert McGrailReem-Kayden Center for Science and Computation Bard College Annandale-on-Hudson, NY 12504May 4, 2008Robert McGrailPHP and SQLOverviewPHP an
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The Relational Data ModelRobert W. McGrail CMSC 116: Semantic WebReem-Kayden Center for Science and Computation 31 Campus Road Bard College Annandale-on-Hudson, NY 12504mcgrail@bard.edu|2RelationalModel.nbOverviewBasicsAttributes/Fields
Bard College - CMSC - 116
Markup Robert McGrail Introduction Basic XML Validation Rules Example: HTML Example: RSS 2.0Introduction to XML-Style MarkupRobert McGrailReem-Kayden Center for Science and Computation Bard College Annandale-on-Hudson, NY 12504February 3, 2008
Bard College - CMSC - 116
CMSC 116 Introduction to Computing: The Semantic web Midterm Practice Problems March 17, 2008(1) Discuss the relative merits of employing a combination of XML and XSLT versus static HTML for online content.12(2) Find at least five errors in t
Bard College - CMSC - 116
XSLT and XPath Robert McGrail Introduction The Data Excel XML Format 1 Format 2XSLT and XPathRobert McGrailReem-Kayden Center for Science and Computation Bard College Annandale-on-Hudson, NY 12504February 18, 2008Robert McGrailXSLT and XPat
Bard College - MATH - 141
Bard College - MATH - 141
Math 141: Business Math I Sections 506 and 523 Review for FinalSpring 2008 MW 4:10-5:25, TR 3:55-5:101Exam 1 Material1. The following table records the population of a city between 1900 and 1940. Year Population 1900 71 925 1910 72 156 1920 75
Bard College - MATH - 141
More on DifferentialsWe often write a derivative as a fraction: .C .B The idea is that .B represents an infinitesimal change in the value of B, and .C represents the corresponding infinitesimal change in the value of C . The quantities .B and .C are
Bard College - MATH - 142
Math 142 Homework 2Due: Friday, February 13 by 5pmName:11. In this problem we will approximate the value of0sin(x2 ) dx.(a) The following picture shows nine rectangles that approximate the area under the curve f (x) = sin(x2 ). Each recta
Bard College - MATH - 308
Math 308 Week 1 SolutionsHere are solutions to the even-numbered suggested problems. The answers to the oddnumbered problems are in the back of your textbook, and the solutions are in the Solution Manual, which you can purchase from the campus books
Bard College - MATH - 317
Math 317 Homework 8Due Tuesday, November 11 Solutions should be written neatly and legibly. You are encouraged to work with others on the assignment, but you should write up your own solutions independently. You should reference all of your sources,
Bard College - MATH - 308
Bard College - MATH - 141
Wisconsin - POLI SCI - 616
The Economics of Superstars Sherwin Rosen The American Economic Review, Vol. 71, No. 5. (Dec., 1981), pp. 845-858.Stable URL: http:/links.jstor.org/sici?sici=0002-8282%28198112%2971%3A5%3C845%3ATEOS%3E2.0.CO%3B2-R The American Economic Review is cur
Wisconsin - POLI SCI - 552
Review of Inferential StatisticsJanuary 21, 2004Political Science 552Review of Inferential StatisticsAlgebra of SummationXi =3 8 i= X1 + X 2 + X 3 + X 4 + X 5 + X 6 + X 7 + X 8Sum of Square:Xi =1N2 i2 = X 12 + X 22 + X 32 + . +
Wisconsin - POLI SCI - 417
PS417: LitigiousnessPolitical Science 417 LitigiousnessThe Litigious American?Lawyers, Lawyers, Everywhere?(per million, circa 1980)U.S. W . Germany Sweden Spain Norway Netherlands France New Zealand Japan Italy England Belgium Australia 0 50
Wisconsin - POLI SCI - 417
PS417: LawJanuary 17, 2006Political Science 417 LawDefinitions of Law Websters New International Dictionary &quot;The binding custom or practice of a community; rules or mode of conduct made obligatory by some sanction which is imposed and enforce