I know that there are a good number of questions that come through that are clearly off topic, e.g., "here do my homework please..." However, as of late, questions are being rapidly closed without any good reason.
Earlier, someone just asked a question about the appearance of the Maxwell-Boltzmann distribution, i.e., why it didn't have integration over the angular variable as it seemed to the OP that it should. The question was not one of those "do my homework" questions.
According to what I have read on policy here at Physics, it is okay to ask questions about homework so long as you show your effort and try and ask about the concepts involved. However, lately, if it smells like homework (doesn't actually have to be) it is just immediately closed. In addition, the policy is not enforced fairly. Some of these "homework problems" seem to go unmolested. Why? There is one floating around right now on functional derivatives, just happily sitting there without anyone bothering it.
If SE wants to be a site where only elite geniuses come together to exchange insight on the foremost frontiers of physics only, then why doesn't it redefine itself, so that the rest of us won't come here and waste our time?
Bottom line: close it if it is a clear case of: "whiney please do my homework". Questions shouldn't be closed or downvoted simply because it doesn't suit someone's sense of aesthetics regarding the "perfect" physics question. Pride goeth before a fall.