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Unformatted text preview: 77777 77777 Instructor(s): Profs. D. Acosta, H. B. Chan, P. Hirschfeld PHYSICS DEPARTMENT PHY 2053 Final Exam April 24, 2010 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 lines 76–80 on the answer sheet 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. (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 g = 9 . 80 m/s 2 G = 6 . 67 × 10- 11 N · m 2 /kg 2 density of water = 1000 kg/m 3 1. A truck carries a package with mass 20 kg on an inclined uphill road at an angle of 10 degrees to the horizontal. The truck travels along this road for 1 minute with a constant velocity of 4 m/s. What is the work done by gravity on the package during this interval? (1)- 8200 J (2)- 46000 J (3) 784 J (4) 46000 J (5) 8200 J 2. An object with mass 0.30 kg is placed on a frictionless table. The object is then attached to a horizontal spring with spring constant 140 N/m. The object oscillates about the equilibrium position, moving horizontally back and forth over a total distance of 5.0 cm. Find the maximum acceleration of the object....
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