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Practice Exam 1 - Spring 2008

Practice Exam 1 - Spring 2008 - PH2200 EXAM I INSTRUCTIONS...

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PH2200 EXAM I SPRING 2008 INSTRUCTIONS 1. Remove the Score Sheet from the exam booklet. 2. Using a #2 pencil, in the left-hand column entitled Student Enrollment Sheet, fill in the following information: I.D. Number enter your M-number, but replace the letter M with the number 9 Name enter your MTU email address without the @mtu.edu Phone Number leave blank 3. With the exception of the first 28 answers on the Score Sheet, all remaining fields should be left blank. 4. Be sure to fill in the circles completely and avoid stray marks on the form. 5. This a ninety minute exam. 6. Please cover your Score Sheet at all times. 7. This is a closed book exam. You may use the PH2200 Formula Sheet that is attached to this exam. The next to last sheet of paper is blank and may be used as scratch paper. You may find it convenient to rip the formula sheet and scratch paper from the exam booklet. 8. Graphing calculators are permitted, but equations may not be stored in calculators, nor may calculators be exchanged. 9. Cell phones should be turned off and may not be used during the exam period. 10. Assume all numerical data supplied with the problems have three significant figure accuracy, unless explicitly identified otherwise. 11. This exam consists of a total of 28 questions. Each question has a single correct answer and is worth five points. The total number of points available on the exam is 140. 12. An announcement will be made when ten minutes remain. Please remain seated after the announcement is made until the Score Sheets are collected. 13. If you have any questions during the exam, please raise your hand and wait for assistance. 14. Please turn in only your Score Sheet. You may keep the exam booklet, formula sheet, and scratch paper. Please Sit in Seat Number _____________________________
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PH2200 EXAM I SPRING 2008 1. A neutral conducting sphere is placed midway between two fixed unequal point charges of q L = +5 μ C and q R = +1 μ C. The sphere is free to move and is insulated from the ground. In which direction will the sphere initially move when released from rest? Ignore gravitational effects. L ....... 5 μ C q = + i R ........ 1 μ C q = + i (A) to the left (B) to the right (C) The sphere will not move. 2. Is it possible for a body to have an electric charge of Is it possible for a body to have an electric charge of 18 2.32 10 C? + × 19 -3.20 10 C? × The following information applies to the next two questions. Two identical, small, conducting spheres are fixed with their centers 0.300 m apart. One is given a charge of , and the other is given a charge of . 9 12.0 10 C + × 9 18.0 10 C ×
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