PHY137H5 Study Guide - Midterm Guide: University Of Toronto Mississauga, Permittivity, Scantron Corporation
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Aids allowed: non-programmable calculators and the provided sheet of constants and formulas. You are not allowed to bring your own prepared sheet of formulas or any sort of information. V kq r k = 1/(4 o) = 8. 99 109 n. m2/c2 permittivity of free space o = 8. 85 10 12 c2/(n. m2) Phy137h5s mid-term test 28 feb, 2012 page 2 of 11. [10] (1) in frame 1, two identical conducting spheres, a and b, carry equal amounts of excess charge that have the same sign. Sphere c is identical to a and b except that it is initially uncharged. Sphere c is touched first to sphere a, in frame 2, and then to sphere b, in frame 3, and is finally removed in frame 4. Determine the magnitude of the electrostatic force that sphere a exerts on sphere b in. Frame 4. (a) 1. 0 n (b) 3. 0 n (c) 4. 0 n (d) 6. 0 n (e) 8. 0 n.
