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Prelim_Exam__1_F04 - Your Name Recitation Instructor's Name...

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Your Name Recitation Instructor's Name: Recitation Section #: Physics 112 October 5, 2004 Prelim Exam #1 7:30 - 9 pm PLEASE BE SURE THIS PACKET HAS 12 PAGES! ( This includes the cover sheet and 2 scrap pages.) This packet contains 7 Short Answer Questions, 3 Problems, and a page of Possibly Useful Information at the end. There are also 2 pages of scrap paper near the end. Write your answers ON THESE QUESTION SHEETS in the spaces provided. For Short Answer Questions #1-7, ONLY ANSWERS WILL BE GRADED, unless calculations are explicitly requested. For Problems #8-10, where algebra or computations are required, BE SURE YOUR METHOD OF SOLUTION IS CLEAR, and SHOW YOUR WORK in the spaces provided. If you need more space, use the backs of the question sheets and indicate the whereabouts of your work for each question. ANSWERS WITHOUT WORK will NOT receive credit (except for short answer questions). WORK ON SCRAP PAPER WILL NOT BE GRADED. Point values for questions are given by each problem and below. BUDGET YOUR TIME. Don't spend too much time on any one question or part of a question. Answer those questions you can do easily first, and then return to the more difficult ones. It is valuable use of your time to READ THE ENTIRE EXAM before starting to work on it. This is a CLOSED BOOK and CLOSED NOTES exam. You may NOT use any other references or personal assistance. You MAY use a NON-GRAPHING calculator. You may NOT use energy methods. For Grading Only: 1-2 /10 8 /25 3-5 /14 9 /15 6-7 /16 10 /20 TOTAL /100
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Your Name 2 SHORT ANSWER [40 points] Please mark your answers in the spaces provided. 1. [6 points] The distance from the North Pole to the Equator along the Earth's surface is about 10 7 m. (a) (3 points) If there were enough land area available on the Earth, roughly how long would it take a person walking every day to walk around the world once? Please make whatever other reasonable estimates you need. (A) 3 weeks (D) 30 years Answer: (B) 3 months (E) 300 years (C) 3 years (b) (3 points) Please show your calculation: 2. [4 points] Three identical ideal springs, each having spring constant k, are connected as shown.
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