Teaching Modern Physics - QuarkNet - Fermilab

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How is the speed increased? A. By varying the electric field from positive to negative 1. Van de Graff or Cockcroft-Walton 2. Linear B. The use of magnetic fields in cyclotrons and synchrotron Fc = Fb (using Fc = (mv 2 )/r and Fb = qvB…) v = (qrB)/m (so as v increases, B needs to increase.) Now, if v = 2πr/T or v = 2πrf, then: f = qB/2πm 123
Cyclotrons are constructed as two “D” magnets with a gap in between through which a particle is accelerated further by a reversing electric potential (field). So as to visualize this structure, if the gap in a certain cyclotron has an electric potential difference of 10 MeV and the particle gains 200 MeV in the cyclotron, what is the frequency of the cyclotron? 124 B ⊗ B ⊗ E
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Materials for Teaching Modern Physi
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Which activities did you use in you
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Materials for Teaching Modern Physi
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QuarkNet is a nationwide program th
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Radioactivity PowerPoint Presentati
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Problems & Worksheets * This activi
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The Cloud Chamber: In the Nobel Pri
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Instructions for teacher to give to
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Teacher’s Key Constant Velocity P
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Sample Problem: Free Fall and Proje
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3. Cindy drops a cherry pit out the
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2. Running at 2 m/s, Chris, the 50-
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3. A 55-kg swimmer is standing on a
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Analysis to prove that momentum was
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Teacher’s Key Circular Motion Pro
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Student Worksheet Constant Accelera
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Teacher’s Key Constant Accelerati
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The Electron 1. What is the value o
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5. A negatively charged oil drop we
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The History of the Electron Workshe
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Student Worksheet Motion of Charged
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Particle Quiz 2 Answer each questio
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. What is the direction of the magn
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High V The Three Experiments in One
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For path B… The cathode ray inter
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In his experiment, Millikan tried t
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Notes on the Electron PowerPoint Pr
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Student Worksheet Index of Refracti
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Teacher’s Key Index of Refraction
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4. A common particle detector techn
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Student Worksheet WARP SPEED Step 1
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Step 1. Select Race for Energy and
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Step 1. Select Law ‘n Order. Step
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Teacher’s Notes The Half-Life of
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a. What do the graphs of the class
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Time (min) 1 2 3 4 5 6 7 8 9 10 11
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1. What is half-life? Half-Life Pra
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Radioactivity The emission of alpha
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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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