Help.Mayday.about electricity and magnetism

AI Thread Summary
The user is struggling to answer questions related to electricity and magnetism, specifically regarding the distinction between a point charge and an infinite line charge. They mention that their teacher clarified that the first question pertains to a point charge, making Gauss's law unsuitable for this scenario. Instead, they attempted to apply Coulomb's law but are still unable to solve the problem. The discussion highlights the confusion surrounding the application of different laws in electrostatics. Understanding the correct context for using Coulomb's law is essential for resolving the issue.
bennyngreal
Messages
12
Reaction score
0
掃瞄0006.jpg
 
Physics news on Phys.org
I cannot answer the questions correctly.I try all my best.Firstly, the teacher said this is not a infinite line charge in the 1st question,instead it is a point charge.So, the Gauss's law is not appropriate. I use the Coulomb's law.But...I skill don't know how to do it.
 
Thread 'Help with Time-Independent Perturbation Theory "Good" States Proof'
(Disclaimer: this is not a HW question. I am self-studying, and this felt like the type of question I've seen in this forum. If there is somewhere better for me to share this doubt, please let me know and I'll transfer it right away.) I am currently reviewing Chapter 7 of Introduction to QM by Griffiths. I have been stuck for an hour or so trying to understand the last paragraph of this proof (pls check the attached file). It claims that we can express Ψ_{γ}(0) as a linear combination of...
Back
Top