Sp2010-Mid1 - Colorado State University Department of...

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Colorado State University - Department of Physics PH142 - Spring 2010 Midterm 1 Tuesday February 16, 2010, 5:00 p.m. - 6:50 p.m. Name ___________________________________ (Please print clearly) VERSION: CSU Student ID #__________________________ Instructions: o When directed to do so, you must fill in your version letter for this test in the box on the bubble sheet, but wait to open your exam. o There are 12 multiple-choice questions. Attempt all problems. There is no penalty for wrong answers. o Allowed with you to take the exam: calculator; one sheet of paper with your notes, and as many blank sheets of paper as you want. o Not allowed: cell phones, PDA's, laptops, headphones, MP3 players, iPods or similar devices, and wireless devices of any kind. o Leave backpacks at front (or back) of the room. Please read each problem carefully before starting to work. DO NOT OPEN THIS EXAM UNTIL DIRECTED TO DO SO. Good luck! MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the question. 1
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Situation 21.1 Two identical small conducting spheres are separated by 0.60m. The spheres carry different amounts of charge and each sphere experiences an attractive electric force of 10.8N. The total charge on the two spheres is - 24 μ C.
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