show work please PHY 2054, Physics II, Montgomery Exam I PHY 2054 Algebra-Based
ID: 1871706 • Letter: S
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show work please
PHY 2054, Physics II, Montgomery Exam I PHY 2054 Algebra-Based Physies Il, Spring '18 L 2 Date: Exam Code: Scantron Equations and Name: conant a Sntron rite Exom Code on your Scantron in the "Test No,"space Clesed book, notes and neighbort ure gron on last page ofcxam Show work in margin or on separare piece of paper Place Name on both the Exam and 1) In Electrostatics, if two objects repel each other must both objects have a net charge? A) Yes and they must be the same charge B) Yes and they must have opposite charge C) no, there can also be polarization induced charge on a neutral object that repels D) Only if one is a Gator and the other a Seminole 2) Two uncharged conducting spheres, A and B, are suspended from insulating threads so that they touch each t not touching sphere A, someone moves ball B away from A w other. While a positively charged rod is held near, bu the rod still near. How will the spheres be charged, ifat all when separated? Sphere A Sphere B meutral A) B netraneutral D) E) negative positive negative How many electrons an 3) when Bob pulls his sock out ofthe dryer it has a net charge of positive 4,0 added or removed from Bob's sock i n order to create this net positive charge on the sock? A) 1.25 x 103 electrons removed B) 1.25 x 103 electrons added C) 2.50 x 10 electrons removed D) 2.50 x 10 electrons added E) zero electrons are added or removed 4) What force does sphere 2 (net positive charge of positive 6.0 C) exert on sphere 1 (net negative ch 12.0 C) if they are separated by r-025 and in what direction is the force on sphere 1? A) 10.4 N along the - x axis B) 10.4 Nalong the+ x axis C) 5.2 N along the +x axis D) 5.2 N along the - x axis E) 3.7 N along the - x axis Sphere 1 Sphere 2 12 q1 negative positiv 1 of 7Explanation / Answer
Problem 3)
Charge, q = n x e
=> Number of electron, n = q/ e = (4 X 10-6)/ (1.6 x 10-19) = 2.5 x 1013 electrons (removed)
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