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12.2 Check and Reflect Questions
Please complete all questions. This assignment is due Wednesday, March 12 @ 8:00 am.
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1. Why is a cathode ray called a cathode ray?
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2. What is the difference between a magnetic field vector arrow and a magnetic field line?
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3. An electron and a proton, both with the same perpendicular velocity, enter a region with a uniform external magnetic field. What can you state about the deflections of both particles?
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4. Decribe the key differences in how magnetic and electric fields affect a moving charged particle.
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5a. A positively charged lithium ion is travelling horizontally along Earth's surface. Describe the deflection due to the magnetic force if the ion travels south to north.
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5b. A positively charged lithium ion is travelling horizontally along Earth's surface. Describe the deflection due to the magnetic force if the ion travels east to west.
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5c. A positively charged lithium ion is travelling horizontally along Earth's surface. Describe the deflection due to the magnetic force if the ion travels upward in the atmosphere.
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