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Advice on taking Physics II

  1. Dec 28, 2009 #1
    I'm going to be taking Physics II with calculus next semester and honestly, I don't remember anything from Mechanics. I took it last year and I have horrible memory. Do you still think I'll do well in Physics II if I study hard and do problems with no previous knowledge of mechanics/physics I or do I need to go back and learn everything over again?

    Thank you so much!!
  2. jcsd
  3. Dec 29, 2009 #2
    Are you in high school or college? These courses vary between schools but is this
    an introductory Electricity and Magnetism course?
    You won't really use much mechanics in an E&M course.
    There will be the occasional problem that requires basic F=ma type solving,
    or maybe a little kinematics (electron fired through a magnetic field at a certain velocity how far will it be deflected?).
    But even then it shouldn't really be an issue.
  4. Dec 29, 2009 #3
    You may also need to remember how to draw a force diagram, and it would help to remember torque.
  5. Dec 29, 2009 #4
    On a totally unrelated note is your name in reference to Naked Lunch?
  6. Dec 29, 2009 #5
    Oh noes, why do I need to remember Torque?

    And about my name, I have been told it's from Naked Lunch but no, I just borrowed it from Harry Potter haha. But it just means a neutral person in politics.
  7. Dec 30, 2009 #6
    In my Physics 2 class, we did torque twice. Torque on an electric dipole in an electric field, and then torque on a current carrying loop in a magnetic field.
  8. Dec 30, 2009 #7
    I actually took a year off after Classical Newtonian Mechanics (I think this is considered Physics I) then took intro to Calculus-based E&M a year later just this past semester and did fine.

    While I did remember how to do most problems from mechanics, I'd say it's important to know the very basics. Aside from the obvious: resolving vectors, some free body diagrams, familiarity with fields, periods and frequencies (for Faraday's Law), torque for the situations Jack21222 brought up; I think understanding the concepts of energy (potential, potential difference, conservation of, etc.) is a good foundation for most of the material covered.
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