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### 1st Interim Exam - Fall 2007

Course: ECON 103, Spring 2008
School: George Mason
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George Mason - ECON - 103
Syracuse - PHY - 101
PHY101: The power of conservation laws: Momentum!What is momentum?Start with Newton's third law: F21 = -F12 . Multiplying Newton's third law by t and using Newton's second law gives usF21 t = -F12 t = m2 v2 = -m1 v1 .If we define momentum p = m
Syracuse - PHY - 101
PHY101: The power of conservation laws?Work and kinetic energyWork has a simple relation to the change in kinetic energy:Wtotal = Wcons + Wnc = K,or the work done by all the forces on an object is equal to the change in kinetic energy of the ob
Syracuse - PHY - 101
PHY101: Fun w/ forces and work w/ energyNewton's LawsNewton's First Law: An object's velocity does not change if and only if the net force acting on the object is zero; inertia For an object in equilibrium, Fx = 0 and Fy = 0. Newton's Second Law
Syracuse - PHY - 101
PHY101: What is energy?What is Energy?Energy is hard to define in the abstract, so we will answer the above question by example Is energy a substance, a quality, a book-keeping device, a system of exchange rates, or.? KEY IDEA: ENERGY IS CONSERVE
Syracuse - PHY - 101
PHY101: Is gravity getting you down?: ForcesForcesNewton's First Law: An object's velocity does not change if and only if the net force acting on the object is zero Inertia is an object's resistance to changes in its velocity.http:/www.cartoon
Syracuse - PHY - 101
PHY101: How the &quot;world&quot; works IFun with cornstarch?!The Professor and Otto: Two-dimensional motionLet's start with a pep talk about solving physics problems.G. R. A. S. P. Given: Write down all the givens Required: Write down the required v
Syracuse - PHY - 101
PHY101: How the &quot;world&quot; works ITortoise and the hare: One-dimensional motionhttp:/www.cartoonstock.com/lowres/pha0147l.jpgDescribing an objectDisplacement VectorThe displacement vector is the change of the position vector, orWhat is the p
Syracuse - PHY - 101
Syracuse - PHY - 101
Syracuse - CHE - 273
Syracuse - CHE - 273
Syracuse - PHY - 101
Welcome to PHY101: How the &quot;world&quot; works IPaul ChaikinWhat is physics? It's knowledge of nature. What is nature? It's matter and it's energy. They are indeed related. How does one &quot;piece&quot; of matter interact with another &quot;piece&quot; matter in terms
Syracuse - PHY - 101
Syracuse - PHY - 101
PHY101: How the &quot;world&quot; works ISid Nagelhe tortoise and the hare: One-dimensional motionQuick review: What is physics? It's knowledge of nature. What is nature? It's matter and it's energy. They are indeed related. How does one &quot;piece&quot; of ma
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Syracuse - PHY - 102
Homework questions #6The hydrogen atom1. 2. 3. 4. How much energy must be supplied to a hydrogen atom to cause a transition from the ground state to the n = 4 state? A hydrogen atom in its ground state absorbs a photon of energy 12.1 eV. To what en
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Homework Assignment #51. A 200-W infrared laser emits photons with a wavelength of 2.0x10-6 m while a 200-W ultraviolet light emits photons with a wavelength of 7.0x10-8 m. (a) Which has greater energy, a single infrared photon or a single ultraviol
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Syracuse - PHY - 102
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Homework Assignment #41. Light rays from the Sun, which is at an angle of 35 above the western horizon, strike the still surface of a pond. (a) What is the angle of incidence of the Sun's rays on the pond? (b) What is the angle of reflection of the
Syracuse - PHY - 102
Syracuse - PHY - 102
Syracuse - PHY - 102
Homework problems #3 (Lectures 6-8)1. The currents in household wiring and power lines alternate at a frequency of 60.0 Hz. (a) What is the wavelength of the EM waves emitted by the wiring? (b) Compare this wavelength to the Earth's radius. (c) In w
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Homework problems #2 (Lectures 4/5)1. The first two dark fringes on one side of the central maximum in a single-slit diffraction pattern are 1.0 mm apart. The wavelength of the light is 610 nm and the screen is 1.0 m from the slit. What is the slit
Syracuse - PHY - 102
PHY 102: Homework #1 Solution 1. From the formula = v.T =v , one obtain : f340m/s = 340Hz . 1.0m wave v s = C = 3 10 8 m/s ,(a) For = 0.1m , v s = 340m/s : f =(b) For the electromagneticthereforef = 3 10 8 Hz 2. The wave length interval
Syracuse - PHY - 102
Syracuse - PHY - 102
1What is the energy in Joules correspoding to 10MeV ?1eV = 1.6 10-19 J. 10M eV = 10 106 eV = 1.0 107 eV Now we have, 1.0 107 eV 1.6 10-19 J = 1.6 10-12 J eVUse the conversion factor that is2What particle is emitted during nuclear alph
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1Question 1Calculate the energy carried by a photon of frequency 1.0 1015 Hz (h = 6.6 10-34 J s). Ephoton = hf = 6.6 10-34 J s 1.0 1015 Hz = 6.6 10-19 J2Question 2What is the momentum of an electron whose energy is 1000eV? What is t
Syracuse - PHY - 102
Qui z 3 Solu tio n sQ1: The fir s t law of t he r m o dy n a mics for a ga s is, U= Q- W . When t he re is n o t h e a t a d d e d t o t h e sys te m Q=0. Furt he r m o re t h e sys te m is exp a n di ng w hich m e a n s t h a t its in ter n al e n
Syracuse - PHY - 102
PHY102 Quiz 2Name:1. A thin slit produces a fuzzy shadow because of a. b. c. d. refraction diffraction condensation interferenceans: diffraction 2. What is the wavelength of x rays of frequency 31018 Hz. The speed of light is 3108 m/s ans: wav
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Major Concepts in Physics Lecture 21.Prof Simon Catterall Office 309 Physics, x 5978 smc@physics.syr.edu http:/physics/courses/PHY102.08SpringPHY1021AnnouncementsExam 3 Monday April 14 in class Material:everything since exam 2. eg temperatu
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Syracuse - PHY - 102
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Syracuse - PHY - 102
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Major Concepts in Physics Lecture 3.Prof Simon Catterall Office 309 Physics, x 5978 smc@physics.syr.edu http:/physics/courses/PHY102.08SpringPHY1021Today .Announcements Interference why light is a wave! Phase difference, constructive and des
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Major Concepts in Physics Lecture 2.Prof Simon Catterall Office 309 Physics, x 5978 smc@physics.syr.edu http:/physics/courses/PHY102.08SpringPHY1021Today .Summary of basic properties of waves Adding waves superpositionwave pulsesStanding
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Syracuse - PHY - 102
Syracuse - PHY - 102