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Unformatted text preview: 77777 77777 Instructor(s): F.E. Dunnam, G. Mitselmakher PHYSICS DEPARTMENT PHY 2054 2nd Exam 22 March 2005 Name (print, last first): 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. (1) Code your test number on your answer sheet (use 7680 for the 5-digit number) . Code your name on your answer sheet. DARKEN CIRCLES COMPLETELY . Code your UFID 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. Circle your answers on the test form. 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 most questions demand. (4) Blacken the circle of your intended answer completely, using a #2 pencil or blue or black ink . Do not make any stray marks or some answers may be counted as incorrect. (5) The answers are rounded off. Choose the closest to exact. There is no penalty for guessing. (6) Hand in the answer sheet separately. Constants = 4 10- 7 Tm 2 A g = 9 . 80 m/s 2 e = 1 . 6 10- 19 C 1 C = 10- 6 C k E = 8 . 99 10 9 Nm 2 /C 2 m e = 9 . 11 10- 31 kg M = mega = 10 6 1nC = 10- 9 C m p = m n = 1 . 67 10- 27 kg c = 3 10 8 m/s = 8 . 85 10- 12 C 2 /N/m 2 1pC = 10- 12 C 1. A conducting rod is 0.5 m long and has a mass of 100 kg. What is the minimum current (in A) in the rod that can1....
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