Practice Final Exam - Spring 2008

Practice Final Exam - Spring 2008 - PLEASE SIT IN SEAT...

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PLEASE SIT IN SEAT NUMBER _____________ PH2200 FINAL EXAM 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 50 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 two hour 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 50 questions. Each question has a single correct answer and is worth six points. The total number of points available on the exam is 300. 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. SI PREFIXES Prefix Symbol Factor Prefix Symbol Factor femto f 15 10 hecto h 2 10 pico p 12 10 kilo k 3 nano n 9 10 mega M 6 micro μ 6 10 giga G 9 milli m 3 10 tera T 12 10 centi c 2 10 peta P 15 10
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PH2200 FINAL EXAM SPRING 2008 1. Which of the following statements best explains why tiny bits of paper are attracted to a negatively charged rubber rod? (A) Paper is naturally a positively charged material. (B) Paper is naturally a negatively charged material. (C) The atoms in the paper become polarized, forming electric dipoles, and each electric dipole experiences an attractive net force toward the rubber rod. (D) The rubber rod induces a net negative charge on the paper. (E) The rubber rod induces a net positive charge on the paper. 2. Three charges are positioned as shown in the figure to the right. +5.00 nC 1.50 nm What is the magnitude of the electric force on the +10.0 nC charge? (A) 11 2.00 10 N × (B) 11 2.50 10 N × (C) 11 3.00 10 N × (D) 11 3.50 10 N × +10.0 nC +15.0 nC 3.00 nm (E) 11 4.00 10 N × q a a q Q 45º 3. In the figures to the right, all charges are positive. Compare the magnitudes of the net electric force exerted on charge Q by the other two charges.
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Practice Final Exam - Spring 2008 - PLEASE SIT IN SEAT...

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