PHYS 1010 Study Guide - Midterm Guide: Farad, Antiderivative

• School: York University
• Department: Physics and Astronomy
• Course: PHYS 1010
• Professor: All

Document Summary

Time: 50 minutes; calculators & formulae provided at the end = only aid; total = 20 points: [5] three identical charges with q = +7. 5 c are located at p1 = ( l, 0), p2(l, 0) and. P1 = (0, l) in the xy plane. Begin with a gure which shows the location of the three charges, and the electron. 1: [5] a small plastic sphere carries an unknown charge q. It is suspended by a string and placed in a uniform electric eld (cid:126)e = 100 i n/c that is turned on gently at t = 0. One nds that it nally makes an angle = 45 with respect to the vertical direction, and that it turned clockwise from the vertical as the eld was turned on. Start with a gure depicting the initial and nal positions of the suspendend sphere and free-body diagrams for both positions.