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The City College of New York, Department of Physics Physics 20800 - Section ST and ST2, Spring 2008 Prof. S. A. Vitkalov: [email protected]; http://www.sci.ccny.cuny.edu/~vitkalov/ Office hours: Tuesday 10am-12am in MR 324A, tel. 212-650-5460 Required text: Vol. 1 and 2, Physics for Scientists and Engineers (7th ed.) by Serway and Jewett Lectures are in MR 117 on T & Th at 5:00-7:05 PM Week 01/28 02/4 02/11 02/18 02/25 Tuesday Wave Motion Ch.16 (1-6); Superposition and Standing waves Ch.18(1-5); No classes , College closed Interference of light Ch.37(1-6); Review Ch.16-18 and Ch.35-38 Thursday Sound waves Ch.17(1-4); Light and geometric optics Ch.35(1-8); Image formation Ch36.(1-4); Diffraction Ch.38(1-5) 1st Exam: Ch.16-18 and Ch.35-38 03/03 03/10 03/17 03/24 03/31 Electric fields Ch.23 (1-7); Gauss Law Ch.24.(3) Electric potential Ch.25((4-6) Current and Resistance Ch.27(1-6); Review Ch.23-28 Gauss Law Ch.24(1,2); Electric potential Ch.25((1-3) Capacitance and Dielectrics Ch.26(1-5); Direct Current Circuits Ch.28(1-4) 2nd Exam: Ch.23-28 04/7 04/14 04/21 04/28 05/05 Magnetic fields Ch.29(1-6) Faraday’s Law Ch.31(1-6) No classes , Spring Recess Alternating Current Circuits Ch.33(1-8) Review Ch.29-34 Sources of magnetic fields Ch.30 (1-7) Inductance Ch.32(1-6) No classes , Spring Recess Electromagnetic Waves Ch.34(1-3) 3d Exam Ch.29-34 05/12 05/16 Review of the course Final exams HOMEWORK Week Tuesday beginning Ch.16: 1,5,18,21,24,32,42 01/28 Ch.18: 1,4,7,11,16,18,19,31,39 02/4 02/11 College closed 02/18 Ch.37: 1, 2, 9,15,18,24,27 02/25 03/03 Ch.23: 5, 7,14,17,20,21,36,64 Thursday Ch.17: 2,4,8,11,18,33,38 Ch.35: 3,9,12,19,21,34,36 Ch.36: 4,6,13,22,29,30,37 Ch.38: 1,4,5,22,23,29,30 1st Exam: Ch.16-18 and Ch.35-38 Ch.24: 1,2,3, 5,6, 9,10 03/10 03/17 03/24 03/31 Ch.24: 18,19,21,47,50,51 Ch.25: 29,31,34,35,40 Ch.27: 1, 8, 12,13,23,30,33 Ch.25: 1,3,4,11,14,15 Ch.26: 4,8,9,12,13,21,27,28 Ch.28: 5,9,12,16,21,28 2nd Exam: Ch.23-28 04/7 04/14 04/21 04/28 05/05 Ch.29: 1,4,14,17,26,30,35 Ch.31: 2,5,11,22,45,49 No classes , Spring Recess Ch.33: 2,6,8,13,18,24,28,36 Ch.30: 1,2,5,17,18, 25,33,35 Ch.32: 2,4,7,12,13,39,40,44 No classes , Spring Recess Ch.34: 2,3 3d Exam Ch.29-34 05/12 05/16 Final exams Important Information for Physics 20800 students: Course Objectives: After successfully completing this course, students should be able to 1.understand the properties of mechanical waves, including longitudinal and transverse waves, standing waves and normal modes 2. understand the properties of sound waves, including the fall-off of intensity for a point source, the decibel scale, the resonant frequencies of stretched strings and waves in pipes, and the Doppler effect 3. understand the properties of plane and spherical mirrors and thin lenses and be able to locate the images they produce 4. understand single- and double-slit diffraction and be able to calculate the positions of minima and maxima on a distant screen 5. calculate electric fields and forces as well as electric potentials and potential energies associated with simple point-charge configurations or charge configurations with planar, cylindrical, or spherical symmetry 6. calculate the capacitance and stored energy for simple conductor arrangements 7. solve simple direct-current circuits by combining series and parallel resistors and by using Kirchoff’s laws and be able to calculate the behavior of simple R-C, L-R, and L-C circuits 8. calculate the magnetic force on a point charge moving in a magnetic field 9. calculate the magnetic fields associated with simple current-carrying configurations 10. calculate the induced emf due to changing magnetic fields and motion of a wire through a magnetic field and apply Lenz’s law to determine the direction of induced current flow 11. calculate mutual and self-inductances for simple coil configurations 12. calculate the voltages, currents, phases, and powers associated with an R-L-C series AC circuit Topics Covered: 1. Mechanical Waves: longitudinal and transverse waves, periodic waves, waves on a string, standing waves, normal modes of oscillation. 2. Sound and Hearing: sound waves, speed of sound, sound intensity, decibel scale for sound, normal modes, beats, longitudinal Doppler effect. 3. The Nature and Propagation of Light: speed of light, the electromagnetic spectrum, reflection and refraction, total internal reflection. 4. Geometric Optics and Optical Instruments: reflection and refraction at a plane interface, spherical mirrors, thin lenses. 5. Interference: Two-source interference: Young’s experiment, interference in thin films. 6. Diffraction: Fraunhofer diffraction, double-slit diffraction, single-slit diffraction, diffraction gratings. 7. Electric Charge and Electric Field: Electric charge, conductors and insulators, Coulomb’s law, electric fields, lines of electric field, electric dipoles. 8. Gauss’s Law: Electric flux, Gauss’s law, application of Gauss’s law to planar, cylindrical, and spherical geometries. 9. Electric Potential: Electric potential energy, electric potential, calculating electric potential, connecting electric field and electric potential. 10. Capacitance and Dielectrics: Capacitance, capacitors in series and parallel, energy stored in the electric field, dielectrics. 11. Current, Resistance, and Electromotive Force: Electric current, electrical resistivity and resistance, electromotive force. 12. Direct-Current Circuits: Series and parallel resistances, Kirchoff’s laws, R-C circuits. 13. Magnetic Fields and Magnetic Forces: Magnetism, magnetic fields and magnetic forces, motion of charged particles in uniform magnetic fields, magnetic force on a current-carrying wire, magnetic dipole, torque on a magnetic dipole. 14. Sources of Magnetic Fields: Magnetic field of a moving charge, magnetic field of a currentelement, magnetic fields of simple configurations (long straight wire, solenoid, toroid, current loop), Ampere’s law, simple applications of Ampere’s law. 15. Electromagnetic Induction: Faraday’s law, Lenz’s law, motional emf, induced electric fields, eddy currents. 16. Inductance: Mutual inductance, self-inductance, electromagnetic energy, superconductivity, R-L circuit, L-C circuit. 17. Alternating Current Circuits: Phasors, inductive and capacitive reactance, L-R-C series AC circuits, power in AC circuits. 18. Electromagnetic Waves: Displacement current and Maxwell’s equations, plane waves as solutions of Maxwell’s equations, polarization. Reading Assignment: The text material that will be covered in class each day is listed on the Lecture schedule. You should read the indicated sections in the textbook before coming to class. Solutions of some illustrative examples will be presented in lecture. Homework: The homework problems are taken from the textbook and are posted online. The homework has to be submitted to : http://www.webassign.net . The homework will be graded (5% of total score). Labs: The Physics Department Lab manual and the lab schedule are available online at http://www.sci.ccny.cuny.edu/physics/undergrad . There are seven labs to be completed during the semester; see the attached schedule. Lab reports must be submitted at the beginning of the following lab period. Note that the grade of incomplete (I) will be assigned for Physics 20800 if all seven lab reports have not been submitted by the required dates. Grades: The following components contribute to final score: exams (3 midterms + final) 90% lab reports (7) 5% homework 5% Exams: There will be three midterm exams (80 min.) and a final exam (140 min.). No exam grades will be dropped and no make-ups will be given except in the case of documented illness. Extra help: Students can obtain extra help in this course by meeting with me either during my office hours in MR324A or at other mutually agreeable times. A tutoring lab will be available in MR418S. You are encouraged and expected to take advantage of all of these opportunities. Effort required: Don’t underestimate the amount of effort required for you to succeed in this course. Many students, in particular those who have not taken a previous course in physics, will need to spend 5-10 hours per week, every week, studying physics and doing the assigned homework problems, in addition to the time spent in lecture, recitation and lab (6 hours per week).