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# ref 4 - brown(twb493 reection 4 chiu(56565 This print-out...

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brown (twb493) – reflection 4 – chiu – (56565) 1 This print-out should have 14 questions. Multiple-choice questions may continue on the next column or page – find all choices before answering. 001(part1of9)10.0points We will begin by investigating various pat- terns of motion under constant magnetic and electric fields. Unlock the code at the bottom of your program. Since this part of the pro- gram does not simulate the cyclotron, com- ment out the while loop to which you have been adding code for the moment. The first half of this assignment will require you to change the proton’s initial momentum and the electric field. Typical values are given in a comment line in the unlocked section. Make sure you predict the answers first before con- firming your predictions with your model. What pattern results from setting p to 0 and E to 0? 1. elliptical ’slanted’ helix 2. straight line 3. planar spiral 4. no motion correct 5. circular helix with uneven spacing of turns 6. cycloid 7. circular helix 8. circle Explanation: 002(part2of9)10.0points What pattern results from setting p to 0 and E to + y ? 1. no motion 2. circular helix 3. straight line correct 4. elliptical ’slanted’ helix 5. planar spiral 6. circular helix with uneven spacing of turns 7. circle 8. cycloid Explanation: 003(part3of9)10.0points What pattern results from setting p to 0 and E to + x (or + z )?

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ref 4 - brown(twb493 reection 4 chiu(56565 This print-out...

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