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UCSD Physics 2A Fall 2009 Instructor : Vivek Sharma Quiz Seven INSTRUCTIONS: Enter your name and code # in the bottom strip of the first page. Return the entire set of exam sheets with your scantron . Use a #2 pencil to fill your scantron. Write your code number and bubble it in under ““EXAM NUMBER””. Bubble in the quiz version (see letter A -- D at bottom of page) in your scantron under ““ EXAM VERSION””. MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the question. 1) Two uniform circular disks having the same mass and the same thickness are made from different materials. The disk with the smaller rotational inertia is: A) the disk with the larger torque B) the one made from the more dense material C) neither, both rotational inertias are the same D) the disk with the larger angular velocity E) the one made from the less dense material 2) A yo - yo, arranged as shown, rests on a frictionless surface. When a force F is applied to the string as shown, the yo - yo:
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