Modern Physics for Scientists and Engineers 3rd edition

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Stephen Thornton and Andrew Rex
Publisher: Cengage Learning


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  • Chapter 1: The Birth of Modern Physics
    • 1.1: Classical Physics of the 1890s
    • 1.2: The Kinetic Theory of Gases
    • 1.3: Waves and Particles
    • 1.4: Conservation Laws and Fundamental Forces
    • 1.5: The Atomic Theory of Matter
    • 1.6: Unresolved Questions of 1895 and New Horizons
    • Supplemental Multiple Choice Questions (10)

  • Chapter 2: Special Theory of Relativity
    • 2.1: The Need for Ether
    • 2.2: The Michelson-Morely Experiment (2)
    • 2.3: Einstein's Postulates
    • 2.4: The Lorentz Transformation (5)
    • 2.5: Time Dilation and Length Contraction (4)
    • 2.6: Addition of Velocities (4)
    • 2.7: Experimental Verification
    • 2.8: Twin Paradox
    • 2.9: Spacetime
    • 2.10: Doppler Effect (2)
    • 2.11: Relativistic Momentum (3)
    • 2.12: Relativistic Energy (4)
    • 2.13: Computations in Modern Physics (2)
    • 2.14: Electromagnetism and Relativity
    • 2: General Problems (2)
    • Supplemental Multiple Choice Questions (10)

  • Chapter 3: The Experimental Basis of Quantum Theory
    • 3.1: Discovery of the X-Ray and the Electron (2)
    • 3.2: Determination of Electron Charge (1)
    • 3.3: Line Spectra (3)
    • 3.4: Quantization
    • 3.5: Blackbody Radiation (4)
    • 3.6: Photoelectric Effect (5)
    • 3.7: X-Ray Production
    • 3.8: Compton Effect (3)
    • 3.9: Pair Production and Annihilation
    • 3: General Problems (1)
    • Supplemental Multiple Choice Questions (12)

  • Chapter 4: Structure of the Atom
    • 4.1: The Atomic Models of Thompson and Rutherford
    • 4.2: Rutherford Scattering (2)
    • 4.3: The Classical Atomic Model
    • 4.4: The Bohr Model of the Hydrogen Atom (6)
    • 4.5: Successes and Failures of the Bohr Model
    • 4.6: Characteristic X-Ray Spectra and Atomic Number (3)
    • 4.7: Atomic Excitation by Electrons (1)
    • 4: General Problems (3)
    • Supplemental Multiple Choice Questions (10)

  • Chapter 5: Wave Properties of Matter and Quantum Mechanics I
    • 5.1: X-Ray Scattering (3)
    • 5.2: De Broglie Waves (4)
    • 5.3: Electron Scattering (3)
    • 5.4: Wave Motion (2)
    • 5.5: Waves or Particles?
    • 5.6: Uncertainty Principle (4)
    • 5.7: Probability, Wave Functions, and the Copenhagen Interpretation (1)
    • 5.8: Particle in a Box
    • 5: General Problems (3)
    • Supplemental Multiple Choice Questions (11)

  • Chapter 6: Quantum Mechanics II
    • 6.1: The Schroedinger Wave Equation
    • 6.2: Expectation Values (1)
    • 6.3: Infinite Square-Well Potential (4)
    • 6.4: Finite Square-Well Potential (1)
    • 6.5: Three-Dimensional Infinite-Potential Well (1)
    • 6.6: Simple Harmonic Oscillator (4)
    • 6.7: Barriers and Tunneling (4)
    • 6: General Problems (2)
    • Supplemental Multiple Choice Questions (10)

  • Chapter 7: The Hydrogen Atom
    • 7.1: Application of the Schroedinger Equation to the Hydrogen Atom
    • 7.2: Solution of the Schroedinger Equation for Hydrogen (1)
    • 7.3: Quantum Numbers (5)
    • 7.4: Magnetic Effects on Atomic Spectra - The Normal Zeeman Effect (5)
    • 7.5: Intrinsic Spin (2)
    • 7.6: Energy Levels and Electron Probabilities (4)
    • 7: General Problems
    • Supplemental Multiple Choice Questions (10)

  • Chapter 8: Atomic Physics
    • 8.1: Atomic Structure and the Periodic Table (4)
    • 8.2: Total Angular Momentum (9)
    • 8.3: Anomalous Zeeman Effect (3)
    • 8: General Problems
    • Supplemental Multiple Choice Questions (10)

  • Chapter 9: Statistical Physics
    • 9.1: Historical Overview
    • 9.2: Maxwell Velocity Distribution
    • 9.3: Equipartition Theorem (1)
    • 9.4: Maxwell Speed Distribution (3)
    • 9.5: Classical and Quantum Statistics (1)
    • 9.6: Fermi-Dirac Statistics (3)
    • 9.7: Bose-Einstein Statistics (1)
    • 9: General Problems (3)
    • Supplemental Multiple Choice Questions (10)

  • Chapter 10: Molecules and Solids
    • 10.1: Molecular Bonding and Spectra (4)
    • 10.2: Stimulated Emission and Lasers (2)
    • 10.3: Structural Properties of Solids (1)
    • 10.4: Thermal and Magnetic Properties of Solids
    • 10.5: Superconductivity (3)
    • 10.6: Applications of Superconductivity (2)
    • 10: General Problems
    • Supplemental Multiple Choice Questions (10)

  • Chapter 11: Semiconductor Theory and Devices
    • 11.1: Band Theory of Solids
    • 11.2: Semiconductor Theory (5)
    • 11.3: Semiconductor Devices (2)
    • 11.4: Nanotechnology
    • 11: General Problems (5)
    • Supplemental Multiple Choice Questions (10)

  • Chapter 12: The Atomic Nucleus
    • 12.1: Discovery of the Neutron
    • 12.2: Nuclear Properties (2)
    • 12.3: The Deuteron
    • 12.4: Nuclear Forces (1)
    • 12.5: Nuclear Stability (2)
    • 12.6: Radioactive Decay (4)
    • 12.7: Alpha, Beta, and Gamma Decay (4)
    • 12.8: Radioactive Nuclides (4)
    • 12: General Problems
    • Supplemental Multiple Choice Questions (10)

  • Chapter 13: Nuclear Interactions and Applications
    • 13.1: Nuclear Reactions (4)
    • 13.2: Reaction Kinematics (6)
    • 13.3: Reaction Mechanisms (2)
    • 13.4: Fission (2)
    • 13.5: Fission Reactors (2)
    • 13.6: Fusion
    • 13.7: Special Applications (3)
    • 13: General Problems
    • Supplemental Multiple Choice Questions (10)

  • Chapter 14: Elementary Particles
    • 14.1: Early Discoveries
    • 14.2: The Fundamental Interactions (1)
    • 14.3: Classification of Elementary Particles (1)
    • 14.4: Conservation Laws and Symmetries (4)
    • 14.5: Quarks (3)
    • 14.6: The Families of Matter
    • 14.7: Beyond the Standard Model (4)
    • 14.8: Accelerators (3)
    • 14: General Problems (2)
    • Supplemental Multiple Choice Questions (10)

  • Chapter 15: General Relativity
    • 15.1: Tenets of General Relativity
    • 15.2: Tests of General Relativity (3)
    • 15.3: Gravitational Waves
    • 15.4: Black Holes (2)
    • 15.5: Frame Dragging
    • 15: General Problems (3)
    • Supplemental Multiple Choice Questions (10)

  • Chapter 16: Cosmology - The Beginning and the End
    • 16.1: Evidence of the Big Bang
    • 16.2: The Big Bang (3)
    • 16.3: Stellar Evolution
    • 16.4: Astronomical Objects (4)
    • 16.5: Problems with the Big Bang (1)
    • 16.6: The Age of the Universe
    • 16.7: The Future
    • 16: General Problems (3)
    • Supplemental Multiple Choice Questions (10)

Questions Available within WebAssign

Most questions from this textbook are available in WebAssign. The online questions are identical to the textbook questions except for minor wording changes necessary for Web use. Whenever possible, variables, numbers, or words have been randomized so that each student receives a unique version of the question. This list is updated nightly.

Question Group Key
P - Problem
SMC - Supplementary Multiple-Choice with Feedback


Question Availability Color Key
BLACK questions are available now
GRAY questions are under development


Group Quantity Questions
Chapter 1: The Birth of Modern Physics
1.SMC 10 001 002 003 004 005 006 007 008 009 010
Chapter 2: Special Theory of Relativity
2.P 28 04 06 12 13 14 15 16 20 21 26 27 31 33 34 35 51 54 58 59 60 66 67 70 78 82 83 93 96
2.SMC 10 001 002 003 004 005 006 007 008 009 010
Chapter 3: The Experimental Basis of Quantum Theory
3.P 19 03 04 08 09 10 11 17 18 19 26 33 34 36 37 39 47 52 53 56
3.SMC 12 001 002 003 004 005 006 007 008 009 010 011 012
Chapter 4: Structure of the Atom
4.P 15 06 08 22 24 29 31 31alt 32 41 42 43 45 49 50 51
4.SMC 10 001 002 003 004 005 006 007 008 009 010
Chapter 5: Wave Properties of Matter and Quantum Mechanics I
5.P 20 02 03 04 10 12 13 15 20 21 22 26 30 42 43 44 46 48 58 59 60
5.SMC 11 001 002 003 004 005 006 007 008 009 010 011
Chapter 6: Quantum Mechanics II
6.P 17 11 16 17 18 21 22 26 33 34 36 37 40 43 44 46 52 59
6.SMC 10 001 002 003 004 005 006 007 008 009 010
Chapter 7: The Hydrogen Atom
7.P 17 06 10 11 11alt 14 15 20 22 23 24 25 29 30 34 38 40 42
7.SMC 10 001 002 003 004 005 006 007 008 009 010
Chapter 8: Atomic Physics
8.P 16 04 07 08 09 12 15 16 18 20 22 24 25 26 30 33 37
8.SMC 10 001 002 003 004 005 006 007 008 009 010
Chapter 9: Statistical Physics
9.P 12 04 07 09 10 16 24 28 35 38 46 49 51
9.SMC 10 001 002 003 004 005 006 007 008 009 010
Chapter 10: Molecules and Solids
10.P 12 09 10 14 16 18 21 26 50 51 52 56 57
10.SMC 10 001 002 003 004 005 006 007 008 009 010
Chapter 11: Semiconductor Theory and Devices
11.P 12 01 02 04 05 08 12 13 17 18 20 26 31
11.SMC 10 001 002 003 004 005 006 007 008 009 010
Chapter 12: The Atomic Nucleus
12.P 17 08 10 14 15 16 25 26 31 32 37 40 41 43 47 50 51 52
12.SMC 10 001 002 003 004 005 006 007 008 009 010
Chapter 13: Nuclear Interactions and Applications
13.P 19 03 06 07 07alt 08 08alt 09 15 16 17 19 20 27 28 30 31 48 49 51
13.SMC 10 001 002 003 004 005 006 007 008 009 010
Chapter 14: Elementary Particles
14.P 18 07 08 14 15 16 17 20 21 22 25 26 27 28 33 34 40 43 46
14.SMC 10 001 002 003 004 005 006 007 008 009 010
Chapter 15: General Relativity
15.P 8 06 07 09 10 13 17 19 21
15.SMC 10 001 002 003 004 005 006 007 008 009 010
Chapter 16: Cosmology - The Beginning and the End
16.P 11 03 06 09 14 15 16 17 19 23 33 36
16.SMC 10 001 002 003 004 005 006 007 008 009 010
Total 404