Phys1120 Sample Midterm1 - PHYS 1120 Exam 1

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Unformatted text preview: PHYS 1120 Exam 1 NAME:______________________________ Spring 2008 E1.1 First Midterm Student ID #__________________________________________________ Section number and TA Name:___________________________________ Exam Version 0001 Please do not open the exam until you are asked to. • Your exam should have 10 pages, numbered E1.1 thru E1.10. • This exam consists of 15 multiple choice questions, worth 5 points each, and a long-answer section worth 25 points, for a total of 100 points. • Write your answers in the space provided on each page for the written question. Use the back of the page if needed. Circle the correct letter for the multiple choice questions. SHOW YOUR WORK ON THE WRITTEN QUESTIONS. Full credit will be given only for the correct answer accompanied by your reasoning. PLEASE!! 1. Print your name on each page in the space provided. 2. Print your student Identification Number on the page above. 3. Bubble your name, ID, and exam version number on the bubble sheet provided. 4. Write the name of your TA neatly in the big blank space at the bottom of the bubble sheet. Our TA's names are Charles Bailey, Jeremy Brown, Craig Hogle, Daniel McKinnon, and Youngwoo Yi I recommend : Don’t waste time erasing on the written problems. Just put a line through defective reasoning. Ask for more paper if needed. At the end of the exam, check that you have completed all the questions. By handing in this exam, you agree to the following statement: "On my honor, as a University of Colorado Student, I have neither given nor received unauthorized assistance on this work" Signature______________________________________________ Possibly useful information: k = 9.0x10 9 N.m 2 /C 2 , basic charge unit 1.6x10-19 C, ε = 8.85x10-12 C 2 /(N.m 2 ) G = 6.7x10-11 N.m 2 /kg 2 Good luck! PHYS 1120 Exam 1 NAME:______________________________ Spring 2008 E1.2 First Midterm Circle the closest answer and Bubble in questions 1-15 ON YOUR BUBBLE SHEET! The gravitational force that a spherical body of mass M 1 feels from a second spherical body of mass M 2 when their centers are separated by a distance, r , is attractive, and has a magnitude given by: This force is very similar in form to Coulomb’s Law for the force between static point charges. 1. We can ignore static electric forces when calculating the motion of planets around the Sun because: A) electric forces drop to nearly zero much more quickly with distance than gravity forces. B) gravity forces are intrinsically larger than electric forces. C) no, electric forces are actually an important part of understanding planetary orbits. D) planets and the Sun are electrically neutral, so the electric forces are very small....
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This note was uploaded on 09/23/2010 for the course PHYSICS 1120 taught by Professor Holland during the Spring '09 term at University of Colorado Denver.

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Phys1120 Sample Midterm1 - PHYS 1120 Exam 1

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