p2f07_finalA_14dec07 - PHYS-1200 PHYSICS II FINAL - A NAME_...

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PHYS-1200 PHYSICS II NAME____________________ FINAL - A Dec. 14, 2007 Please check the number next to your section below. IF YOU ARE IN THE WRONG ROOM, MOVE TO THE CORRECT ONE IMMEDIATELY. SECTION EXAMINATION INSTRUCTOR Section time NUMBER ROOM ___1 DCC 318 SCOTT DWYER MR 8:00 A.M. ___2 DCC 318 SCOTT DWYER MR 10:00 A.M. ___3 Sage 3303 HEIDI NEWBERG MR 10:00 A.M. ___4 Sage 3303 JOEL GIEDT MR 12:00 NOON. ___5 DCC 330 THOMAS SHANNON MR 12:00 NOON ___6 Sage 3303 ANGEL GARCIA MR 2:00 P.M. ___7 West Hall WAYNE ROBERGE MR 2:00 P.M. ___8 West Hall GLENN CIOLEK MR 4:00 PM ___9 DCC 324 KIM LEWIS TF 10:00 A.M. ___10 DCC 324 KIM LEWIS TF 12:00 NOON ___11 DCC 330 JOHN SCHROEDER TF 12:00 NOON. ___12 West Hall GYORGY KORNISS TF 2:00 PM There are 13 different pages in this quiz, including the cover page. Check now to see that you have all of them. Place your name on every page. CREDIT GRADE PART A 120% PART B 30% PART C-1 20% PART C-2 20% TOTAL 190% You have 180 minutes for this exam. If you are unclear on any question, ask the proctor. All work and answers must be given in the spaces provided on these pages. You are permitted the both sides of a single 8 ½ x11" sheet for notes. Use of any other materials will result in a zero for this examination. You may use a calculator for math functions. Collaboration on this exam will result in zero grade and letter to the Dean of Students for all students involved. To receive credit on parts B and C you must show adequate work to justify your answer . Show your work logically and neatly. Ambiguous or illegible answers will be graded incorrect . page 1 of 14
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PHYS-1200 PHYSICS II NAME____________________ FINAL - A Dec. 14, 2007 A. Multiple choice (4 pts each) ____A1) Electric charges A and B are attracted to each other. Electric charges B and C are also attracted to each other. If A and C are held close to one another, they will A) attract B) repel C) not affect one another D) more information is needed to answer _____A2) Two identical point charges q are 0.1 m apart. The force between them is 1 N. Which value is closest to the magnitude of q? A) 1.11x10 11 C B) 0.95x10 5 C C) 1.05x10 -6 C D) 3.3x10 -11 C E) There is not enough information given. ____3) A speaker emitting sound at 400 Hz and 100 W is measured to have a sound level of 80 dB when measured at a distance of R . What is the sound level at the same location if the speaker power is decreased by a factor of 10, to 10 W? A) 1/4 R 2 B) 10 dB C) 81 dB D) 79 dB E) 70 dB ____4) A positive charge Q is placed on a hollow conducting sphere of inner radius R 1 and outer radius R 2 . A particle with charge q is placed at the center of the cavity in the sphere, as shown in the sketch. The magnitude of the electric field inside the cavity, at a distance r from the center ( r < R 1 ) is: A. zero B. 2 1 0 4 R Q πε C. 2 0 4 r q D. 2 0 4 ) ( r Q q + E. ) ( 4 ) ( 2 2 1 0 r R Q q - + page 2 of 14
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PHYS-1200 PHYSICS II NAME____________________ FINAL - A Dec. 14, 2007 ____5) A battery is used to charge a series combination of two identical capacitors. If the potential difference between the terminals of the battery is V , and total charge Q flows through the battery during the charging process, then the charge on the positive plate of each capacitor, and the potential difference across each capacitor
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This note was uploaded on 04/11/2010 for the course PHYS 1200 taught by Professor Stoler during the Spring '06 term at Rensselaer Polytechnic Institute.

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p2f07_finalA_14dec07 - PHYS-1200 PHYSICS II FINAL - A NAME_...

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