How much should I remember from general physics?

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Discussion Overview

The discussion revolves around the preparedness of a participant transitioning from general physics to more advanced courses in electromagnetism (E&M) and mechanics. It explores concerns about retaining knowledge from previous physics classes and the importance of mathematical skills in succeeding in these subjects.

Discussion Character

  • Homework-related
  • Conceptual clarification
  • Technical explanation

Main Points Raised

  • One participant expresses concern about their retention of material from general physics and its potential impact on their performance in intermediate E&M and Mechanics classes.
  • Another participant suggests that a solid understanding of mathematics, particularly multivariate calculus and differential equations, is crucial for success in these advanced physics courses.
  • It is proposed that working through problems is essential for linking mathematical concepts to physical realities, emphasizing the importance of problem-solving skills.
  • A later reply highlights the necessity of being comfortable with vector calculus and suggests reviewing various coordinate systems, indicating specific mathematical topics that may be relevant for E&M.

Areas of Agreement / Disagreement

Participants generally agree on the importance of mathematical preparation for the upcoming physics classes, but there is no consensus on how much prior knowledge from general physics is necessary or how to best approach the review of that material.

Contextual Notes

Participants mention various mathematical prerequisites and suggest different strategies for review, but there is uncertainty regarding the specific level of understanding required from general physics to succeed in intermediate courses.

Who May Find This Useful

Students preparing for advanced physics courses who have previously taken general physics and are concerned about their mathematical and conceptual readiness.

Moonshine
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I took the usual general physics classes about 4 years ago during my chemistry undergrad career. Now, I'm taking some more physics classes in order to go to grad school for physics.

I'm going to be taking intermediate E&M and Mechanics. Will I have a hard time in these classes if I don't remember much from the general physics classes? I am reviewing some of the material, but I won't have time to finish it all before the classes start, and I'm worried that I will do poorly.
 
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Honestly, if You're jumping into E&M and Mechanics, you might want to brush up on your math. What's your highest math? Are you comfortable with math? If you're at least to (3D calc)/(Vector Calc) and some differential equations, you should be good.

If you felt that your intro-physics was satisfactory, I would concentrate on working some problems. Much of what is important in physics is the reality-math link that only comes with working problems.

On the other hand, if you have difficulty describing the concepts that you learned in intro physics to a friend, I would start with concepts.
 
I've taken Calc I-III, Linear Alg, and Diff. Equations. I have been and will be reviewing some of the material from those classes too. I think our class has a short review on some of the math topics too. So that should help.
 
You should get very cozy and comfortable with multivariate calculus. Especially for E&M, you'll need vector calculus - div, grad, curl and all that. In fact, a great reference is a short book called https://www.amazon.com/dp/0393969975/?tag=pfamazon01-20.

Oh, and review a bit about coordinate systems other than Cartesian (polar, e.g.).
 
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