Pedigo Midterm 2 - Physics 121A Autumn 2013 121A-PEDIGO...

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Physics 121A Autumn 2013 121A-PEDIGO Exam 2 October 31, 2013 Printed Name c\ Seat Number last first I certify that the work I shall submit is my own creation, not copied from any source, and that I shall abide by the examination procedures outlined below. Signature | Student ID Number \/ I would like to pick up my exam in class or pick it up later from Susan Miller's office (Rm. C136) Please hold my exam in Susan Miller's desk for private pick-up READ THIS ENTIRE PAGE NOW, BEFORE THE HALF-HOUR BELL. Do not open the exam before the half-hour bell. You will have 60 minutes after the bell to complete the examination. Exam papers will no longer be accepted after 61 minutes have elapsed. NO CELL PHONES, TEXT MSG, etc. ALLOWED AT ANY TIME Before the exam begins: Print and sign your name, and write your student ID number and the number of your seat in the spaces on this page (above). Write your name, student ID number and exam version on your bubble sheet, and fill in the corresponding "bubbles" using dark pencil marks. During the exam: Important first step: Print your name and student ID at the top of each page. If you are confused about a question, raise your hand and ask for an explanation. If you cannot do one part of a problem, move on to the next part. This is a closed book examination. You have access to the equation sheet included with this exam, and to things written on the classroom board by the instructor. You may use a calculator, but you may not use text storage capabilities, graphics capabilities, internet connections, phones, nor any programmable device. You may not use scratch paper, you may not communicate with any person. For multiple-choice problems (those on white paper): Fill in bubble sheets carefully and darkly. Make no stray marks. Erase carefully. Also circle your choices directly on the exam paper for later reference. For hand graded problems (those on colored paper): If you need more space than is available to answer any part of a problem, use the back side of the same page to complete your answer. Clearly indicate to the grader that you used the back side. Do not use scratch paper. Show your work in enough detail so that the grader can follow your reasoning and your method of solution. Circle your answers, and state units if appropriate. For numerical answers significant figures should match the number of significant figures in the numerical values given in the problem (usually 2 or 3).
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Name Student ID last first I. Lab questions A cart with mass Mean = 1530 ± 20 g is held on an inclined track with a massless string. The incline of the track is 10°. All fnctional forces can be neglected in this problem. The tension force in the
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