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Unformatted text preview: 77777 77777 Instructor(s): Mueller/Rinzler PHYSICS DEPARTMENT PHY 2048 Exam 1 September 30, 2008 Name (print, last first): Signature: On my honor, I have neither given nor received unauthorized aid on this examination. YOUR TEST NUMBER IS THE 5DIGIT NUMBER AT THE TOP OF EACH PAGE. (1) Code your test number on your answer sheet (use lines 76–80 on the answer sheet for the 5digit 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. (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. Where needed use g = 9 . 80 m/s 2 77777 77777 1. The volume of a sphere is given by V = 4 3 πR 3 , where R is the radius. The mass, M , of a sphere with uniform mass density ρ is M = ρV . A solid sphere has a uniform mass density of 2.05 kg/m 3 . If the total mass of the sphere is 68.64 kg, the radius of the sphere is about: (1) 2.0 m (2) 1.0 m (3) 3.0 m (4) 0.5 m (5) 4.0 m 2. The speed v in m/s of an automobile is given by v ( t ) = bt 2 + c/t 3 , where the time t is in seconds. The units of b and c are respectively: (1) m/s 3 ; m · s 2 (2) m · s2; m · s4 (3) s 3 /m; s 4 /m (4) m/s 2 ; m/s 3 (5) m/s; m/s 3. A particle moves along the x axis from x i to x f . Of the following values of the initial and final coordinates, which results....
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 Summer '08
 Field
 Physics, Force, Friction, Mass, m/s

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