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### TutorialLineSpectra

Course: PHY 250, Fall 2009
School: University of Dayton
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Word Count: 318

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Spectra When Line the particles in the solid, liquid, or gas accelerate, they will produce EM waves. Electron orbit to orbit transitions in atoms (gasses) Applicable to the study of stars (gaseous objects) Line Spectra Emission Spectrum In accordance with the Energy Minimum Principle, the electron will then jump to a lower energy state. In doing so, it will give up a specific amount of energy through the...

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Spectra When Line the particles in the solid, liquid, or gas accelerate, they will produce EM waves. Electron orbit to orbit transitions in atoms (gasses) Applicable to the study of stars (gaseous objects) Line Spectra Emission Spectrum In accordance with the Energy Minimum Principle, the electron will then jump to a lower energy state. In doing so, it will give up a specific amount of energy through the emission of a photon. E1 E2 E3 E3 E2 = h f32 The electron in a hydrogen atom is in the second excited state. What are the energies of the photons that could be emitted as the electron moves to the ground state? The second excited state corresponds to n = 3. Also, recall that for hydrogen, n 2 E = -13.6 eV / n The electron can drop directly from the second excited state (n=3) to the ground state (n=1) emitting a photon. It could also drop from the second excited state (n=3) to the first excited state (n=2) emitting a photon, and then drop from the first excited (n=2) state to the ground state (n=1) emitting another photon. Therefore, the energy change for the electron in each case is 3 to 1 2 2 E 3 to 2 = -13.6 eV (1/1 1/3 ) = -12.08 eV 2 2 What is the frequency of each photon emitted in the previous calculation? The three photon energies are 12.08 eV, 1.89 eV and 10.2 eV. Converting each to Joules gives the following energies 31 -19 -18 E = 12.08 eV = (12.08 eV) (1.6 x 10 32 -19 J / 1 eV) = 1.94 x 10 -19 J E = 1.89 eV = (1.889 eV) (1.6 x 10 21 -19 J / 1 eV) = 3.022 x 10 -18 J E = 10.2 eV = (10.2 eV) (1.6 x 10 Then, since E ...

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University of Dayton - PHY - 250
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University of Dayton - PHY - 250
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University of Dayton - PHY - 250
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University of Dayton - PHY - 250
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University of Dayton - PHY - 250
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University of Dayton - SCI - 190
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University of Dayton - SCI - 190
E = F/q
University of Dayton - SCI - 190
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University of Dayton - SCI - 190
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University of Dayton - SCI - 190
E = F/q
University of Dayton - SCI - 190
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University of Dayton - SCI - 190
15 Part 2, A: THERMODYNAMICS 6 WORK Definition (Young): Energy is the capacity to do work.16 Part 2, A: THERMODYNAMICS 56 WORK Definition (Young): Energy is the capacity to do work. W = Fd W F d is the work done (Joules) is the applied force (Newto
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Motion Newton's LawsI'd rather be a hammer than a nail.- Simon and Garfunkel1Motion Newton's Laws1. Every body continues in its state of rest or uniform motion unless it is acted upon by a net external force. 2. The acceleration of a body i
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PHYSICS 202, WINTER 2007 Please note that this syllabus is subject to change!Instructor: Dr. Mo Ahoujja Office: SC013 Phone: 229-2735 Email: Mo.ahoujja@notes.udayton.edu Homepage: http:/campus.udayton.edu/~physics/ma/ma.htm Office Hours: MWF: 1:00-2
University of Dayton - PHY - 202
Practice Test #3- Chapters 23, 24 and 27 from Giancoli 5ed1. A real object is placed 10 cm from a converging lens that has a focal length of 6 cm. Which statement is most accurate? a. b. c. d. The The The The image image image image is is is is rea
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Practice Test #3- Chapters 23, 24 and 27 from Giancoli 5ed1. A real object is placed 10 cm from a converging lens that has a focal length of 6 cm. Which statement is most accurate? a. b. c. d. The The The The image image image image is is is is rea
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PHY202Practice-Test 1Winter, 20031. What is the magnitude and direction of the electric field at a point midway between a 8 C and a +6.0 C charge 4.0 cm apart? a. b. c. d. 3.2x108 N/C, toward the negative charge 3.2x108 N/C, toward the positive
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Practice Test 2 (chapters 20, 21, 22, and 23 from Giancoli).Mar3, 031. What is the strength of a magnetic field 4.0 cm from a long straight wire carrying 3.0 A of current? 2. Two long parallel wires carry currents of 5.0 A and 8.0 A in the same d
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PHYSICS 206, WINTER of 2006 Please note that this syllabus is subject to change!Instructor: Dr. Mo Ahoujja Office: SC013 Phone: 229-2735 Email: mo.ahoujja@notes.udayton.edu Homepage: http:/www.udayton.edu/~physics/ma/ma.htm Office Hours: MWF: 11:00-
University of Dayton - SCI - 190
Review for test4 Chapter 22chapters 22, 24, 25, and 26Like charges repel and unlike charges attract. Electric force between two charges is proportional to the product of the charges divided by the square of the distance between the two charges. G
University of Dayton - SCI - 190
SCI190,Fall of 2008 Note that this syllabus is subject to change!Instructor: Dr. Mo Ahoujja Office: Sherman SC013 Phone: 92735 (229 2735 off campus) E-mail: mo.ahoujja@notes.udayton.edu Homepage: http:/campus.udayton.edu/~physics/ma/ma.htm Office Ho
University of Dayton - PHY - 207
PHY20702 3010827 2863680 3006583 3018016 3079352 3035215 3005433 3006612 3033386 2979889 3060505 3040192 3009359 2823718 3060463 3053660 3006555 3044152 3014471 3018910 3006547 3036672 3060426 3025514 3030896 2774642 2974179 3006526 3227976 3014200 2
University of Dayton - PHY - 207
PHYSICS 207, FALL 2006Instructor: Dr. Mo Ahoujja Office: SC013 Phone: 229-2735 Email: mo.ahoujja@notes.udayton.edu Homepage: http:/www.udayton.edu/~physics/ma/ma.htm Office Hours: MWF: 1-2, or by appointment. Note that this syllabus is subject to ch
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Intermediate Mechanics IIExam2 Take-HomeNovember 14, 2006The following problems are due at the beginning of class on Monday, 4 December 2006. Problem 1. (25 pts.) A massless rigid rod of length l is attached at one end to an electric motor and
University of Dayton - SCI - 190
Chapter 6Momentum = mass times Momentum = m v velocityWhich has a greater momentum, a heavy truck at rest or a moving skateboard? What is the magnitude of the momentum of a 100 kg bike moving at 14 m/s? What is the magnitude of the momentum of a 0
University of Dayton - PHY - 206
PHYSICS 206, Fall of 2008 Please note that this syllabus is subject to change!Instructor: Dr. Mo Ahoujja Office: Sherman SC013 Phone: 92735 (229 2735 off campus) E-mail: mo.ahoujja@notes.udayton.edu Homepage: http:/campus.udayton.edu/~physics/ma/ma.
University of Dayton - PHY - 206
Practice Test#3 (Chapters 8,9, and 10 From Tipler) 1.The center of mass of the system of particles shown in the diagram is at point A) 1 B) 2 C) 3 D) 4 E) 52. A boy and girl on ice skates face each other. The girl has a mass of 20 kg and the boy
University of Dayton - PHY - 206
Practice Test 2 1. A mass m is traveling at an initial speed v0 = 25.0 m/s. It is brought to rest in a distance of 62.5 m by a force of 15.0 N. What is the mass m?2.Which of the following free-body diagrams represents the block sliding down a fri
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PHY 201 Summer 1st Session, 2008Instructor: Dr. Mo Ahoujja Office: SC 013 Phone: 229-2735 e-mail: mo.ahoujja@notes.udayton.edu Webpage : http:/campus.udayton.edu/~physics/ma/ma.htmTEXT: Giancoli, Physics, 6th Ed. 2005 Course Description and Object
University of Dayton - PHY - 207
Practice Test 3 1. (a) An AC voltage source has an output given by = 200 sin t. This source is connected to a 100 resistor. Find the peak (maximum) and rms current in the circuit. (2 A, 1.41A)(b) An inductor L = 25 mH is connected to a source whos
University of Dayton - PHY - 206
Practice Test#4 (Chapters 11 and 14 From Tipler)1. The moon has a period of 27.3 d (days) and is an average distance from the earth of 3.84 105 km. A communications satellite is placed in an earth orbit at 4.23 104 km from the center of the earth