Taking a semester off of physics

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Discussion Overview

The discussion revolves around a participant's decision to take a semester off from studying Electricity & Magnetism (E&M) after completing Mechanics. The participant expresses concerns about retaining knowledge from Mechanics and the ability to handle E&M after a break. The conversation includes insights on preparation and the relationship between the two physics courses, as well as the importance of mathematical skills.

Discussion Character

  • Exploratory
  • Technical explanation
  • Conceptual clarification
  • Debate/contested
  • Homework-related

Main Points Raised

  • The participant feels comfortable with Mechanics but worries about forgetting material before taking E&M.
  • Some participants suggest that reviewing vector operations and mathematical concepts will be beneficial for E&M.
  • One participant notes that E&M relies heavily on Maxwell's equations and the Lorentz Force Law, indicating that it is not directly comparable to Mechanics.
  • Another participant mentions that the difficulty of E&M may depend on whether the course emphasizes theory or practical problem-solving.
  • There is a suggestion that continuing with advanced math courses may help prepare for the calculus-heavy aspects of E&M.
  • A participant expresses admiration for the original poster's performance in Mechanics without having completed Calculus III.

Areas of Agreement / Disagreement

Participants generally agree that reviewing mathematical concepts and certain physics topics will be helpful for E&M. However, there is no consensus on the extent to which the break will impact the participant's ability to succeed in E&M, as opinions vary on the relationship between the two courses and the necessary preparation.

Contextual Notes

Some participants emphasize the importance of mathematical readiness, particularly calculus, in succeeding in E&M, while others focus on the need to review specific physics concepts from Mechanics. The discussion does not resolve how much knowledge may be forgotten during the break.

Who May Find This Useful

Students considering a break between physics courses, particularly those transitioning from Mechanics to Electricity & Magnetism, as well as those interested in the role of mathematics in physics education.

elementG
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Hi, I just would like to hear some insights from you guys about my situation. Last semester I took Physics - Mechanics (1st sem physics for engineers). I passed it with a high B. I felt comfortable but not superior at the subject after taking the final. Now this semester I was supposed to take Physics - Electricity & Magnetism (2nd sem physics for engineers) but unfortunately the sections that were offered could not fit into my schedule. I just decided to skip it this semester and take it during the fall. Will I be able to handle E&M after a break? I know that I'm going to forget a lot from the mechanics class, should I worry about it? What do you think? Any insight appreciated.
 
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elementG said:
Hi, I just would like to hear some insights from you guys about my situation. Last semester I took Physics - Mechanics (1st sem physics for engineers). I passed it with a high B. I felt comfortable but not superior at the subject after taking the final. Now this semester I was supposed to take Physics - Electricity & Magnetism (2nd sem physics for engineers) but unfortunately the sections that were offered could not fit into my schedule. I just decided to skip it this semester and take it during the fall. Will I be able to handle E&M after a break? I know that I'm going to forget a lot from the mechanics class, should I worry about it? What do you think? Any insight appreciated.

I think you should be fine. Make sure to review how to do cross products, dot products and vector additions.
 
They are not all that similar. EM relies on Maxwell's 4 equations, Lorentz Force Law, Waves, and sometimes optics.

All I remember needing to know was those equations (how to derive others, which you will learn) and things like super position. I might be forgetting something though.

It shouldn't be too bad.

edit: It's not an easy class if they require you to learn the theory. If they just let you plug and chug, it'll be easy.
 
It might actually work to your benefit... as long as you've been continuing in your math sequence (often I think students are unprepared for the more-extensive use of calculus in E&M).

Just be sure to review some of the topics others suggested above... and while you take the course, you may want to also review other topics (like "projectile" motion... which is often revisited when a charge particle is launched in an electric field; or circular motion... which can occur when moving charges enter a magnetic field).
 
physics girl phd said:
It might actually work to your benefit... as long as you've been continuing in your math sequence (often I think students are unprepared for the more-extensive use of calculus in E&M).

Just be sure to review some of the topics others suggested above... and while you take the course, you may want to also review other topics (like "projectile" motion... which is often revisited when a charge particle is launched in an electric field; or circular motion... which can occur when moving charges enter a magnetic field).

By the time I take E&M in the fall I would be finished with all of my math. Right now I'm taking Calc3 and DE. In the summer I will be taking Linear Algebra. Thank you for the insight.
 
You took mechanics without taking calc III? It's pretty impressive that you did so well.
 

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