PH 142 Midterm: PH 142 Midterm 1 Spring 2010
Document Summary
Tuesday february 16, 2010, 5:00 p. m. - 6:50 p. m. Instructions: when directed to do so, you must ll in your version letter for this test in the box on the bubble sheet, but wait to open your exam, there are 12 multiple-choice questions. Please read each problem carefully before starting to work. Do not open this exam until directed to do so. Choose the one alternative that best completes the statement or answers the question. 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 c. Situation 21. 1: in situation 21. 1, the two spheres are connected by a slender conducting wire, which is then. The electric force on each sphere is closest to: zero, 3. 6 n, attractive, 5. 4 n, attractive, 5. 4 n, repulsive, 3. 6 n, repulsive. Two small insulating spheres are attached to silk threads.
