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Ph101-08&09-1fin - Kuwait University PHYS 101 Date...

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Kuwait University Department of Physics (I) PHYS 101 Final Examination General Physics 1 Date : January 18, 2009 Time: 8:00 – 10:00 AM Student’s Name :________________________ KU ID :______________Section:___ Instructor’s Name :________________________ INSTRUCTIONS : Do not start until you are told to do so. Solve all problems, show all work and circle your final answer. Show all work neatly in this booklet. Books and notes are not permitted. Make sure that exam booklet includes 5 conceptual questions and 10 problems, in 6 pages including the cover page. Mobile phones and pagers are not allowed during the exam time. Circle your final answer. Take g = 10 m/s 2 For Instructors only: Prob. 1 2 3 4 5 6 7 8 9 10 Subtotal Score MCQ 1 2 3 4 5 Subtotal Score
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Part I: Questions (Choose the correct answer) 1. A canon can hit a target located at point C from two points A or B. If the initial angles A and θ B ) of these projectiles and their ranges (R A and R B ) are related as θ A = θ B and R A = 2R B then their initial speeds are related as: i) A B V V = ii) A B V V 2 = iii) A B V V 2 = iv) 2 A B V V = 2. A force F can act on a block of mass m in three different directions as shown in the figure. Knowing that µ k is the same, the case that has the smallest frictional force is: i) a ii) b iii) c iv) all the same 3. A particle of mass ( m ) tied to a cord of length ( l ) is released from position (A) as shown in the figure . The tension T in the cord at the lowest position (B) is: i) 3mg ii) 2mg iii) mg iv) 5mg 4. Two particles of equal masses are connected with a massless rod of length d . The system can rotate about any of the parallel axes at a, b and c. (All axes are perpendicular to the line joining the two masses). The largest moment of inertia is that about axis: i) a ii) b iii) c iv) all are the same 5. A constant force of 1.0 N acts for 1.0 s on three particles of different masses m 1 = 0.1 kg, m 2 =1 kg, m 3 = 10 kg. Which one of the following statements is correct: i) The impulse given to the 0.1 kg mass is the largest ii) The impulse given to the 1 kg mass is the largest iii)The impulse given to the 10 kg mass is the largest iv) all impulses are the same .
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