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Unformatted text preview: 77777 77777 PHYSICS DEPARTMENT PHY 2049, Fall 2011 Midterm 1 October 4, 2011 Name (print): Signature: On my honor, I have neither given nor received unauthorized aid on this examination. YOUR TEST NUMBER IS THE 5-DIGIT NUMBER AT THE TOP OF EACH PAGE. DIRECTIONS (1) Code your test number on your answer sheet (use 76–80 for the 5-digit number) . Code your name on your answer sheet. Darken circles completely (errors can occur if too light) . Code your student number on your answer sheet. (2) Print your name on this sheet and sign it also. (3) Do all scratch work anywhere on this exam that you like. At the end of the test, this exam printout is to be turned in. No credit will be given without both answer sheet and printout with scratch work. (4) Work the questions in any order. Incorrect answers are not taken into account in any way; you may guess at answers you don’t know. (5) If you think that none of the answers is correct, please choose the answer given that is closest to your answer. (6) Blacken the circle of your intended answer completely, using a number 2 pencil . Do not make any stray marks or the answer sheet may not read properly. Completely erase all incorrect answers, or take a new answer sheet. (7) As an aid to the examiner (and yourself), in case of poorly marked answer sheets, please circle your selected answer on the examination sheet. Please remember, however, that in the case of a disagreement, the answers on the bubble sheet count, NOT what you circle here. Good luck!!! >>>>>>>> WHEN YOU FINISH <<<<<<<< Hand in the answer sheet separately. Constants: e = 1 . 6 × 10- 19 C m p = 1 . 67 × 10- 27 kg m e = 9 . 1 × 10- 31 kg ² o = 8 . 85 × 10- 12 C 2 /N · m 2 k = 1 / (4 π² o ) = 9 × 10 9 N · m 2 /C 2 nano = 10- 9 micro = 10- 6 pico = 10- 12 1. Three charges form an equilateral triangle of side length d = 1 cm. The top charge is q 3 =- 4 μ C, while the bottom two are q 1 = q 2 = +1 μ C. What is the magnitude of the net force acting on...
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- Fall '08
- Physics, Electric charge, N·m2 /C