214F07Pre1

# 214F07Pre1 - Physics 214 PRELIM I October 2, 2007 Name: _...

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Page 1 of 9 Physics 214 PRELIM I October 2, 2007 Name: _________________________________________ Signature: _______________________________________ Section # and TA: ________________________________ Score: Part Possible points Score I 40 II 20 III 20 IV 20 Total 100 This examination is closed books and closed notes . No calculators or other electronic devices are permitted . A formula sheet and scratch paper are provided. Use the space provided after each question for your answers and write your final answers in the boxes provided. If you need more room for a problem, write "over" and continue on the back. Cross out anything that should not be considered part of your answer. The scratch paper will not be graded. In all but Part I, you must show your work to get full credit . Make sure you have all 9 pages. Please write your name on each page. By signing this exam you certify that you adhere to the Cornell academic integrity code. Unless a problem explicitly states otherwise, assume that waves have small amplitudes and that gravity is negligible. Good luck!

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Page 2 of 9 Part I: Short answer questions 1-8 (40 points – 4 points each) 1. The graph shows the potential energy U of a particle as a function of its position along the x -axis. Near which point(s) are oscillations possible? (A) a only (B) b only (C) c only (D) d only (E) e only (F) b and e (G) a and c U ( x ) x 2. The motion of an ideal mass-spring system is described by: x ( t ) = A cos ( ω t + φ 0 ). Which of the constants A , , 0 , are determined by the initial conditions (initial position and velocity)? (A) A and 0 , but not ω (B) A and , but not 0 (C) A only (D) only (E) 0 only (F) all three 3. A transverse string wave is traveling in the – x direction without changing shape. The velocity of a string segment is proportional to the ______ of the segment.
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## This note was uploaded on 05/14/2008 for the course PHYS 2214 taught by Professor Giambattista,a during the Spring '07 term at Cornell.

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214F07Pre1 - Physics 214 PRELIM I October 2, 2007 Name: _...

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