Reviewing Griffiths, I found a what [I]should[/I] be a straightforward problem.
An infinity long circular cylinder carries a uniform magnetization $M$ parallel to its axis. Find the magnetic field.
The discussion prior to this problem is about bound currents, so using the equations outlined, ...
alright, I guess I can post it somewhere else. No, I get the physics, I'm just confused as to why he would put something in the book that seems to always produce a super ugly integral
Because those equations are worth understanding in their own right. There's no rule that says any given problem must be done with the equations derived right before it. :-P
or that a given equation must be used in some problem.
Is it appropriate to ask the OP of a question to select your answer as the selected answer when you know that s/he has entirely understood your answer and that s/he is satisifed by it in the comments?
For example: in this answer I completely explained the mechanics of the pulley sliding on the ...
Quick and silly question. For a point particle the field is infinite at the centre. The field is not simply connected. Does it mean Gauss law doesn't apply? Should we use the delta Dirac?
@DavidZ I think it would be helpful if you could update the homework policy](meta.physics.stackexchange.com/a/715/7433), by providing a brief explanation of why the homework tag was created: so people can check that questions aren't graded assignments/course-work etc
@DavidZ and in the section "What kinds of questions are considered homework questions?", I would emphasise: A "homework question" is any question that could be assigned to a student by a teacher as part of their graded coursework.
Hi y'all! Can I ask that people show this MSO question, meta.stackoverflow.com/questions/187372/…, which asks for better clickability on the close-vote dialog, some love?
@LarryHarson Sure, I'll take a look at that, but I would point out that what you've got there is not actually the definition of a homework question, just a good (not necessarily 100% accurate) rule of thumb for identifying them.
The actual definition is already in the homework policy, namely any question in which the value lies in learning the method rather than finding the answer.
I am hoping someone can please give me an answer. I was at a dog park with my dog and son (hes 12), which is directly under high/loud voltage power lines. I went to brush some dirt of my sons neck when I felt his neck "buzzing". He didnt feel it. I felt all over him, and he was buzzing/vibrati...
@davidz I can only think of one use for the homework tag, and that's as an anti-cheating device. So I think this should largely influence the definition of the homework tag. Otherwise, people will end up tagging questions as "homework" in a way which is largely useless.
Perhaps we could crowd source a rewrite of "Lobachevsky" for MathOverflow. "And who deserves the credit? And who deserves the blame? Antonin Ivanovish Geraschenko is (not) his name!", as well as "The secret of my success? Hyperlink!" (Rhyme forthcoming.) — The Masked Avenger2 days ago
@LarryHarson Yes, that has influenced the definition of the tag. It's meant to designate questions where the value lies in the method rather than in the answer, which are exactly those questions where seeking a final answer in a way that bypasses understanding the method would count as cheating.
Reviewing Griffiths, I found a what [I]should[/I] be a straightforward problem.
An infinity long circular cylinder carries a uniform magnetization $M$ parallel to its axis. Find the magnetic field.
The discussion prior to this problem is about bound currents, so using the equations outlined, ...
Is it appropriate to ask the OP of a question to select your answer as the selected answer when you know that s/he has entirely understood your answer and that s/he is satisifed by it in the comments?
For example: in this answer I completely explained the mechanics of the pulley sliding on the ...
I am hoping someone can please give me an answer. I was at a dog park with my dog and son (hes 12), which is directly under high/loud voltage power lines. I went to brush some dirt of my sons neck when I felt his neck "buzzing". He didnt feel it. I felt all over him, and he was buzzing/vibrati...
