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p201f03-exam04 - Seat Physics P201 D Baxter/R Heinz EXAM#4...

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Seat # Physics P201 D. Baxter/R. Heinz EXAM #4 December 17, 2003 8:00–10:00 AM INSTRUCTIONS 1. Please indicate with form (1, 2, 3, or 4) exam you have by marking the appropriate bubble in column “P” of the SPECIAL CODES box on your answer sheet. Your exam is form 1 . 2. Sit in SEAT # given above. 3. DO NOT OPEN THE EXAM UNTIL YOU ARE TOLD TO DO SO. 4. Print your name (last name first) and blacken in the letters on the answer sheet with a #2 pencil. 5. Print your student number (identification number) and blacken in the numbers on the answer sheet with a #2 pencil. 6. Use the fronts and backs of the question sheets for scratch work. Do not use any other scratch sheets. 7. This is a multiple choice exam. Blacken in the answer to each question on the answer sheet. Fill in one and only one answer to each question. 8. Keep your eyes on your own work. 9. You have two hours to complete the exam. When you finish, please show your picture ID as you turn in your answer sheet. Please leave quietly so others are not disturbed. 10. THERE ARE 24 QUESTIONS PLEASE ANSWER ALL OF THEM. THERE IS NO PENALTY FOR GUESSING! This is a closed book, closed note exam! You may use only a calculator and four self-prepared sheets of formulas.
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1. Two blocks (one of mass 2.00 kg and the other of mass 8.00 kg) are connected together by a massless string that passes over a massless pulley as shown in the figure below. The blocks start from rest, the 8.00 kg block slides without friction along the table. After the 2.00 kg block has moved down by 0.500 m, what is the speed of the 8.00 kg block? a. 1.4 m/s b. 1.6 m/s c. 1.8 m/s d. 2.0 m/s e. 2.2 m/s 2. A large triangular wedge with a mass of 12.0 kg rests on a frictionless horizontal surface as shown. A block of mass 4.0 kg is released from rest on the stationary wedge, whose inclined surface is rough. A short time after the block is released, the wedge is found to be moving to the left with a speed of 2.0 m/s. What is the x-component (horizontal component) of the block’s velocity at this time?
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