# Register now to access 7 million high quality study materials (What's Course Hero?) Course Hero is the premier provider of high quality online educational resources. With millions of study documents, online tutors, digital flashcards and free courseware, Course Hero is helping students learn more efficiently and effectively. Whether you're interested in exploring new subjects or mastering key topics for your next exam, Course Hero has the tools you need to achieve your goals.

2 Pages

### Mid-term

Course: PHYS 1304, Spring 2008
School: SMU
Rating:

Word Count: 393

#### Document Preview

points Mid-term Name: ID: (8 each question) 1 1. Charge Q1 of is placed 1 meter away from charge Q2 of k 1 . The quantity k is k 8.99109 Nm2/C2, the constant in Coulomb's Law. What is the force on Q2? 2. State Gauss's Law and Ampere's Law in your own language and write out the formulas. State Faraday's Law of induction and write out the formula, and state Lentz Law in your own language. A high voltage...

Register Now

#### Unformatted Document Excerpt

Coursehero >> Texas >> SMU >> PHYS 1304

Course Hero has millions of student submitted documents similar to the one
below including study guides, practice problems, reference materials, practice exams, textbook help and tutor support.

Course Hero has millions of student submitted documents similar to the one below including study guides, practice problems, reference materials, practice exams, textbook help and tutor support.
points Mid-term Name: ID: (8 each question) 1 1. Charge Q1 of is placed 1 meter away from charge Q2 of k 1 . The quantity k is k 8.99109 Nm2/C2, the constant in Coulomb's Law. What is the force on Q2? 2. State Gauss's Law and Ampere's Law in your own language and write out the formulas. State Faraday's Law of induction and write out the formula, and state Lentz Law in your own language. A high voltage generator is made of a metal sphere with a radius of 6 cm sits on an insulating post. A wire connects to the sphere's inner surface through a small hole. The wire carriers a current of 1 A and flows into the sphere when the switch is closed. One (1) minute after the switch is closed, what is the electric potential at the surface of the sphere assuming potential far away from the sphere is zero? 3. 4. 5. A straight wire of cross section A and length L has a resistance R and is connected to a battery of emf V, ignore the internal resistance. A certain amount of heat H is generated through the wire every second. When the wire is stretched to twice its length but kept its volume unchanged, what is the heat now generated every second? Inside a conductor the net charge is zero. Use Gauss's Law to prove that the electric field is also zero. Twisted wire pairs are used to reduce interference generated from signal transmission. In each twisted wire pair, the current is the same in magnitude but flows the opposite direction. Use Ampere's Law to prove that the magnetic field generated by this twisted wire pair is zero. In those hard times, people connected two light bulbs in series to prolong the lifetime of them so as to save money on light bulbs. If a person connects two 40W/220V light bulbs in series to a 220V line, what is the actual power consumed by one light bulb in this configuration? assuming the filament's resistance does not change much with temperature. 6. 7. 8. 9. ( 16 points) Calculate the effective resistance or capacitance between point A and B. 10. (15 points) Calculate the power consumed by R1 and the potential at point A. 11. (5 points) An electric pulse of 5V with duration of 1 second is applied at point A and B. calculate the potential difference of C and D (VCD) as a function of time.
Find millions of documents on Course Hero - Study Guides, Lecture Notes, Reference Materials, Practice Exams and more. Course Hero has millions of course specific materials providing students with the best way to expand their education.

Below is a small sample set of documents:

SMU - PHYS - 1304
Chapter 27Current Resistance And ResistorElectric Current, the definitionAssume charges are + + moving perpendicular to a A + + surface of area A + + If Q is the amount of charge that passes through A in time t, then I the average current is
SMU - PHYS - 1304
The Gauss' Law Electric field of A point charge Q1The Gauss' Law Electric field of An infinitely long straight wire with charge density .2The Gauss' Law3The Gauss' Law Electric field of An infinitely large plane with charge densi
SMU - PHYS - 1304
Mid-termName:ID:Key1. FkQ1 Q 2 r2k1 k1 k 2r1 121NF on Q2 follows the line defined by Q1 and Q2, and points to Q1. 2. Gauss' Law: the electric flux through an enclosed surface equals to the charge inside divided by the consta
SMU - PHYS - 1304
Chapter 33Alternating Current (AC) R, L, C in AC circuitsAC, the descriptionA DC power source, like the one from a battery, provides a potential difference (a voltage) that does not change its polarity with respect to a reference point (often t
SMU - PHYS - 1304
Geometric optics Light reflects on interface of two media, following the law of reflection:Reflected light r iNormal of the interfaceIncident lightwith respect to the normal of the interface. with respect to the normal of the interface.
SMU - PHYS - 1304
Homework 91. A current pulse is fed to the partial circuit shown in the figure. The current pulse is 10.0 A and its duration is from t =0 to t = 200 s. Determine the current in the inductor and the resistor as a function of time.2.A 1.00 F capac
SMU - PHYS - 1304
Chapter 27Current Resistance And ResistorElectric Current, the definitionAssume charges are + + moving perpendicular to a A + + surface of area A + + If Q is the amount of charge that passes through A in time t, then I the average current is
SMU - PHYS - 1304
Homework 71. A conductor consists of a circular loop of radius R and two straight, long sections as shown in the figure. The wire lies in the plane of the paper and carries a current I. Find an expression for the vector magnet field at the center of
SMU - PHYS - 1304
Coulomb's Law Charges: A property of matter. Positive and Negative charges, the unit of charge is Coulomb. Like sign charges repel, unlike sign charges attract. Charges conserve in a system. Conductor, insulator and ground. Force between two
SMU - PHYS - 1304
Introductory Physics IIWelcome and Congratulations This is the largest class I have ever had at SMU. Let's work together to make it the best one. I congratulate you on making this wise decision to learn physics, especially Electricity and Magneti
SMU - PHYS - 1304
Quiz 2Name:ID:1.A straight, infinitely long insulating rod has a radius a. Positive charges are evenly distributed on the rod with a charge density . Calculate the electric field in space including that inside the rod.2.A flat, infinitely
SMU - PHYS - 1304
Homework 5Step 1, formulas or related concepts.In serial:In parallel: Step 2, known quantities.,,Step 3, direct application of the formulas/concept or the condition to form an equation. 1 1 a) 5.96( F ) 1 1 1 20 6 15 3
SMU - PHYS - 1304
Electric Charge and Coulomb's Law Electric charge The positive charge and negative charge: Matter is made of atoms. Inside an atom, there is the nucleus that is surrounded by electrons. Inside the nucleus, there are two particles called proton and
SMU - PHYS - 1304
Chargespositive (+) negative (-) conservationForce (field) qq 1 q1 q 2 F12 k e 1 2 2 r12 r12 4 0 r 2 rForce between point charges Force on charge in the field Fe qE E E dA q0Connect field with its source: chargePotential (e
SMU - PHYS - 1304
Quiz 0Name: ID:Mathematics is the language in sciences. Certain amount of knowledge in mathematics is required to understand the material in this course. To help you check how well you are prepared in math for this course, please complete this qu
SMU - PHYS - 1304
Capacitance, Capacitors and Circuits. Start with a reviewThe capacitance C is defined asQ C VTo calculate the capacitance, one starts by introduce Q to the object, and use the Laws we have so far to calculate for the V.Example: Capacitance of
SMU - PHYS - 1304
Homework 31. Four closed surfaces, S1 through S4, together with the charges -2Q, Q and Q are sketched in the following figure (The colored lines are the intersections of the surfaces with the page.) find the electric flux through each surface.2.
SMU - PHYS - 1304
Homework 2 1. Two charges of +2q and -5q are placed on a line. The distance between the two charges is d. (a) There is a point on the line where the strength of the electric field due to the two charges is zero. Describe where the point is, relative
SMU - PHYS - 1304
Class projectName:ID:Please select two and only two questions out of the three questions. Write clearly your answers to the questions you choose. Each correctly answered question is 2 bonus points counted towards the final grade. Very limited p
SMU - PHYS - 1304
Homework 11. In a process known as beta decay, a neutron (charge 0) in an unstable atomic nucleus becomes a proton (charge +e), ejecting an electron (charge e) and an antineutrino. (a) Use conservation of charge to determine the charge of an antineu
SMU - PHYS - 1304
Outline and review Review on Coulomb's Law and electric field. Discussion about electric potential (energy). Coulomb's Law in electrostatics governs the forces between two point charges:1Review: Coulomb's Law While magnitude of the force i
SMU - PHYS - 1304
Chapter 28Direct Current Circuits1. 2. 3. 4. 5. R connections in series and in parallel Define DC (direct current), AC (alternating current) Model of a battery Circuits with 2+ batteries Kirchhoff's Rules RC circuit:&quot;Confucius says, reviewing h
SMU - PHYS - 1304
Quiz 1Name:ID:1.Positive charges with magnitudes 3.50 mC (=3.5010-3C) and 6.75 mC are located at the origin and at the point (10.00, 0) meters on the x axis, respectively. What are the strength and direction of the field they generate at the p
SMU - PHYS - 1304
Electromagnetic Induction We introduced motional emf and Faraday's Law through these two examples: Today we will the discussion about Faraday's Law of Induction and introduce the following new law and concepts: Lenz's Law, mutual induction and sel
SMU - PHYS - 1304
Chapter 35The Laws of Geometric OpticsThe Ray Approximation of Light in Geometric Optics Geometric optics studies the propagation of light. Light travels in a straight-line path in a uniform medium. Light changes its direction when it meet
SMU - PHYS - 1304
Capacitors in Direct Current Circuits One capacitor in a DC circuit: Two capacitors in a DC circuit: In series:1Capacitors in Direct Current Circuits Two capacitors in a DC circuit: In parallel: Multiple capacitors: In series: In par
SMU - PHYS - 1304
Chapter 36Image Formation 1: 1. Flat mirror 2. Spherical mirrorsFind the image, method 2, the mirror/lens equationWhen a spherical mirror is given, we know its radius R. Under paraxial condition, the angle NCF is small, and from the law of reflec
SMU - PHYS - 1304
Chapter 27Current Resistance And ResistorReviewThe current is defined and its unit is ampere (A), a base unit in the SI system.++ ++A+ +IdQ dtIThe charges passing through the area could be positive or negative or both. They are ca
SMU - PHYS - 1304
Mid-term review Charges and current. Coulomb's Law. Electric field, flux, potential and Gauss's Law. Passive circuit components. Resistance and resistor, Ohm's Law. Resistance as a function of temperature. Power dissipated through a resistor. C
SMU - PHYS - 1304
Chapter 30Sources of the Magnetic FieldA whole picture helpsCharge q as source Gauss's Law Faraday's Law Electric field ECurrent I as source Ampere's LawMagnetic field B FE qEAmpere-Maxwell Law FB qv BForce on q in the fieldForc
SMU - PHYS - 1304
Final ExamName:ID:1.(10 points) In an X-Y coordinate system with unit in meter, charge Q1 of 7.865 C is placed at (-1,0). Charge Q2 of -7.865 C is placed at (1,0). A third charge Q3 of charge 1 C is placed at (0,1), (a) What is the total force
SMU - PHYS - 1304
abc1
SMU - PHYS - 1304
Find image with a thin lenshodoFFdiObjectfhihodohiFFObjectdif1Analytical calculations Thin lens equation.hohi1 di1 do1 fmagnification : mhi hodi do2Analytical calculations Lens maker's equa
SMU - PHYS - 1304
Electric Flux and Gauss LawElectric flux, definition Ei Ai cos i Ei EE AilimAiEEi Ai 0 E dAsurfaceGauss lawE E dAqin0qin is the net charge inside the surfaceApplying Gauss Law To use Gauss law, you need to choose
SMU - PHYS - 1304
Quiz on the math needed todayBWhat is the result of this integral:B1 dx 2 A x1 xBA1 A1 B1 dx 2 A xIf y( x) is known and y( x)z ( x) dy( x) dxz ( x)dx, what is z ( x)? If y(r ) is known and y(r ) z (r ) y (r ), z(r )
SMU - PHYS - 1304
A different reviewA review of the following topics by working on problems1. Electric charge, potential, force, field and flux. Coulomb's Law Gauss's Law. 2. Capacitance and resistance. Ohm's Law. 3. Circuits. Kirchhoff's Rules.Electric field of a
SMU - PHYS - 1304
Chapter 36Image Formation 2 1. Thin Lens 2. Multi lens/mirror systemSpherical mirror formulasFocal length and sphere radius:fR 2Converging mirrorfR 2Diverging mirrorObject distance, image distance and focal length:1 pM1 qhI hO
SMU - PHYS - 1304
Thin Lens Light refracts on the interface of two media, following Snell's law of refraction:1Medium 1n1sin1 n2sin 21 and 2 are both with respectto the normal of the interface. The parameters n1 and n2 are call the index of medium 1 and 2 re
SMU - PHYS - 1304
Template1 Step 1, formulas or related concepts. Step 2, known quantities. Step 3, direct application of the formulas/concept or the condition to form an equation. Step 4, vector involved? Step 5, unit in the final answer correct? Answered all were as
SMU - PHYS - 1304
Mid-term review Charges and current. Coulomb's Law. Electric field, flux, potential and Gauss's Law. Passive circuit components. Resistance and resistor, Ohm's Law. Resistance as a function of temperature. Power dissipated through a resistor. C
SMU - PHYS - 1304
Reviews on Electricity and MagnetismElectricity Field Charge generates electric filed (from Coulumb's Law)MagnetismCurrent generates magnetic field Biot-Savart's Law Analytically solvable cases point charge:point current:1Reviews on Ele
SMU - PHYS - 1304
Review on R, L, C and RLC in AC circuitsAn AC power source is a sinusoidal voltage source which is v described asVmaxvVmax sintWe study the current i as a function of time when a resistor, inductor, capacitor or the serial connection of
SMU - PHYS - 1304
Chapter 34Electromagnetic Waves and lightElectromagnetic waves in our life Microwave oven, EM wave is used to deliver energy. Radio/TV, cell phones, EM wave is used to carry information. Telephone and internet: electrical signal in copper w
SMU - PHYS - 1304
Refraction, the Snell law Light in geometric optics is discussed in rays and represented by a straight line with an arrow indicating the propagation direction. Light propagates in straight lines in homogenous medium. Light reflects on interface of
SMU - PHYS - 1304
Alternating Current and RLC Circuits Alternating Current: the current direction changes with time. Compare with DC in which the current direction stays the same with respect to time, the magnitude of the current may change. A typical case in AC: I
SMU - PHYS - 1304
Discussion about the mid-term 8. In those hard times, people connected two light bulbs in series to prolong the lifetime of them so as to save money on light bulbs. If a person connects two 40W/220V light bulbs in series to a 220V line, what is the a
SMU - PHYS - 1304
Capacitance and Capacitors Capacitance: Any volume (material) that has net charge in it produces electric potential around it (Gauss' Law). The ratio of net charge in the volume to the potential of the volume (define potential at infinitely far a
SMU - PHYS - 1304
Omega Z Phi I_max P_av 400 0.764065442 -89.2501 1.963183 0.01927 440 0.363264939 -88.4226 4.129218 0.085252 460 0.17779449 -86.7757 8.436707 0.35589 480 0.010000889 -0.7639 149.9867 112.48 500 0.170293864 86.63354 8.808303 0.387931 520 0.333872868 88
SMU - PHYS - 1304
Chapter 23Electric FieldsElectricity and Magnetism, Some HistoryMany applicationsMacroscopic and microscopicChineseDocuments suggest that magnetism was observed as early as 2000 BCElectrical and magnetic phenomena as early as 700 BC
Minnesota - GEO - 1005
Jessie Ehlen Geo1005 Writing Assignment 1 March 6, 2008 Part 12.There are many things that the diminishing Magnetic field would due to the Earth and to society. The Earths magnetic field repels and deflects the solar wind from coming in which if
Minnesota - SPAN - 1004
Jessie Ehlen Sec. 18 11/05/07Yo visito el restaurante Los Toros. El direccion es 2100 State Street, Minneapolis, MN 55455. Los horarios de Los Toros era 11:00am 11:00pm. Ellos estn abiertos todos los dias. La comida que se sirve en Los Toros es me
Minnesota - COMM - 1101
Education in Prisons Prison. What do you think about when you hear that word? Murders, 12 x 12 feet cells, criminals? These are common words associated with prisons but behind the barbed wire gate and into the prison are classrooms and much needed re
SUNY Buffalo - PE - 123
1. _ 2. _ 3. _ 4. _ 5. _Name _CM132/CM104 Hour Exam #2 February 28, 2002Please Circle the number of the course in which you are currently enrolled. General Chemistry II (CM132) CM132 students, please circle the day and time of your laboratory s
UC Irvine - CHEM - 51LB
Recrystalliation is a method to purify a given compound.Although, no compound is Recrystallization isever 100% pure, nevertheless we seek to achieve the highest state. a very similar technique we use in our daily life.For ex, when we eat a hamb
UC Irvine - WOMEN ST - 50a
Women study, study guide Terms Community: often understood as a natural group that has a collective identity New social movement: a way of referring to civil rights, student, women's, gay and lesbian, and indigenous people's movements since the 1960s
S.F. State - RAZA - 110
Jose Ronses Raza 110 Dr. Rivera 29 April 2008 Exercise 7-3: 1, 4, 6 1. I agree that Americans have gone overboard with the use of politically correct language. It seems as though we make up new words everyday for things that are in politics nowadays.
S.F. State - RAZA - 110
Jose Ronses Piano 120 Section# 2 Dr. Ginwala 1 May 2008 Thoughts on Music I've had a hard time formulating a thesis on the concerts that I saw in Knuth Hall. I would have rather written about the types of music that I listen to and how they use what
Hagerstown CC - ECON - 201
ECO 201Exchange Rate between the American Dollar and the EuroThe last time that I had an opportunity to use a Euro was the summer of 2005 when I was in Greece for vacation. Like the American, Dollar there are many similarities between the two bu
Hagerstown CC - SPD - 103
John Kontogiannis Dr. Croft SPD 103 2 May 2007 Take Home Essay Question 1. The specific purpose of a friend in need is found in lines twenty three to twenty six. The central idea of a friend in need is found in lines eight to eleven. The method of
Hagerstown CC - ENG - 99
Ms. Smeltzer Eng. 99-03 6 Feb. 2007 Emphasis on Competitive Sports in College The public is very interested in college sports. There are many ways the general public follows sports with student sections, parties, pep rallies, and march madness bracke
Hagerstown CC - MGT - 103
John Kontogiannis Susan Mosher Eng 99-03 6 Feb. 2007 The movie Remember the Titans has many Glean Management lessons throughout the movie. The Glean management lessons that I chose are communication, leadership, diversity, motivating people, ethics,