How much should I remember from general physics?

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Taking intermediate Electromagnetism (E&M) and Mechanics after a gap in physics studies can be challenging, especially if foundational concepts are not well-remembered. A strong grasp of mathematics, particularly up to multivariable calculus and differential equations, is essential for success in these courses. Reviewing problem-solving techniques is crucial, as applying mathematical concepts to physics problems helps solidify understanding. If there is uncertainty about the basic concepts from introductory physics, it is advisable to revisit those topics before starting the new classes. Familiarity with various coordinate systems, beyond just Cartesian, is also beneficial for tackling E&M problems effectively.
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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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Hey, I am Andreas from Germany. I am currently 35 years old and I want to relearn math and physics. This is not one of these regular questions when it comes to this matter. So... I am very realistic about it. I know that there are severe contraints when it comes to selfstudy compared to a regular school and/or university (structure, peers, teachers, learning groups, tests, access to papers and so on) . I will never get a job in this field and I will never be taken serious by "real"...
Yesterday, 9/5/2025, when I was surfing, I found an article The Schwarzschild solution contains three problems, which can be easily solved - Journal of King Saud University - Science ABUNDANCE ESTIMATION IN AN ARID ENVIRONMENT https://jksus.org/the-schwarzschild-solution-contains-three-problems-which-can-be-easily-solved/ that has the derivation of a line element as a corrected version of the Schwarzschild solution to Einstein’s field equation. This article's date received is 2022-11-15...
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