Teaching Modern Physics - QuarkNet - Fermilab

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For path A… The cathode ray only interacts with the electric field so: Fc = FE (mv 2 )/r = qE For path C… The cathode ray only interacts with the magnetic field so: Fc =FB (mv 2 )/r = qvB q/m = v/(Br) 41
For path B… The cathode ray interacts with both the electric field and the magnetic field simultaneously. FE = FB qE = qvB v = E/B Using v = E/B and q/m = v/(Br)… q/m = (E/B)/(Br) or q/m = E/(B 2 r) since V = Ed q/m = V/(B 2 rd) (Thompson could determine the charge-to-mass ratio of the “cathode ray” by measuring V, I (magnetic field), radius of curvature and the distance between the plates.) 42
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Materials for Teaching Modern Physi
Page 3 and 4: Which activities did you use in you
Page 5 and 6: Materials for Teaching Modern Physi
Page 7 and 8: QuarkNet is a nationwide program th
Page 9 and 10: Radioactivity PowerPoint Presentati
Page 11 and 12: Problems & Worksheets * This activi
Page 13 and 14: The Cloud Chamber: In the Nobel Pri
Page 15 and 16: Instructions for teacher to give to
Page 18 and 19: Teacher’s Key Constant Velocity P
Page 20: Sample Problem: Free Fall and Proje
Page 23 and 24: 3. Cindy drops a cherry pit out the
Page 25 and 26: 2. Running at 2 m/s, Chris, the 50-
Page 27 and 28: 3. A 55-kg swimmer is standing on a
Page 29 and 30: Analysis to prove that momentum was
Page 32 and 33: Teacher’s Key Circular Motion Pro
Page 34 and 35: Student Worksheet Constant Accelera
Page 36 and 37: Teacher’s Key Constant Accelerati
Page 38: The Electron 1. What is the value o
Page 41 and 42: 5. A negatively charged oil drop we
Page 44 and 45: The History of the Electron Workshe
Page 46 and 47: Student Worksheet Motion of Charged
Page 48: Particle Quiz 2 Answer each questio
Page 51 and 52: . What is the direction of the magn
Page 53: High V The Three Experiments in One
Page 57 and 58: In his experiment, Millikan tried t
Page 60 and 61: Notes on the Electron PowerPoint Pr
Page 62 and 63: Student Worksheet Index of Refracti
Page 64 and 65: Teacher’s Key Index of Refraction
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Page 98 and 99: Modern Physics The Ultraviolet Cata
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4. Calculate the wavelength of the
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5. An air rifle is used to shoot 1-
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4. The work function for potassium
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6. Describe the quantum-mechanical
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Draw Geiger, Marsden, and Rutherfor
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Explain why Balmer/Rydbergh’s for
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10. Describe how particle physics a
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Particle Acceleration (Principles)
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Electric Field and Acceleration +
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Multistage Accelerators (LINAC) 1 2
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Particle Accelerators Why were they
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Cyclotrons are constructed as two
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QUIZ ON PARTICLE ACCELERATORS 1. De
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There are 12 elementary particles t
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6. What magnetic field intensity is
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And finally, we need to remember sp
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Z Boson Mass Reconstruction for DØ
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1 Z Boson Mass Reconstruction for D
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1 Z Boson Mass Reconstruction for D
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3D Z Boson Mass Reconstruction Answ
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7. J. J. Thompson applied a net for
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d.) energy / a silicon detector and
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1) A 2) E 3) E 4) B 5) B 6) B 7) C
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16. What are the three particles th
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16. What are the three particles th
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Anticharm ( c ) Antimatter Quark Ch
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Gluon Gauge boson Force carrier: St
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3. -1 charge 4. Positron 4. Antimuo
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Standard Model Review - Answer Key
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5. Now draw the p vectors of p + an
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5. Now draw the p vectors of p + an
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Newton’s Universal Law of Gravita
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II. Intended Activities and Approxi
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All questions from project written
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periodicals and newsletters. The co
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Fermilab’s Accelerators This is a
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A Game for Building a Detector http
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us. An alternate “radiation” so
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Day 4: 1. Question of the Day: A ha
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Teacher Resources: 1. Standard Mode
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Teaching Modern Physics - QuarkNet - Fermilab

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