mt2_f04_chiao - Physics 7A Section 2(Chiao 2nd Midterm...

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2nd Midterm University of California at Berkeley Tuesday, November 9, 2004, 6-8 pm, 1 Pimentel IMPORTANT: Print your name, student ID number, GSI name, and your discussion section number on the front of your blue book. This exam contains 6 questions, and will be graded out of a total of 100 points. You should answer all the questions to the best of your ability. You are allowed both sides of two sheets of handwritten notes, and the use of a calculator, but no QWERTY keyboards are allowed. Express all numerical results to 3 signi f cant f gures. The following are useful constants: The acceleration due to Earth’s gravity in the Bay Area is g =9 . 80 m/s 2 . The Earths’s radius is r E =6 . 38 × 10 3 km. The mass of the Earth is M E =5 . 97 × 10 24 kg. Newton’s constant for universal gravitation is G =6 . 67 × 10 11 Nm 2 kg 2 . Please show all your work in your blue book. Explain the steps in your reasoning in coherent, English sentences. De f ne all symbols that you use. If you do not show relevant work for any part of the prob lem ,youw i l lnotbeawardedanycred it ,eveni ftheansweris correct. If you recognize that an answer does not make physical sense, and you do not have time to f nd your error, write that you know that the answer cannot be correct, and explain how you know this to be true. (We will award some credit for recognizing there is an error.) For full credit, explain your reasoning carefully, show all
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mt2_f04_chiao - Physics 7A Section 2(Chiao 2nd Midterm...

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