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Not an answer:

Hi . Welcome to Phys.SE. This is not an answer so I'm deleting it. To ask a question go [here](http://physics.stackexchange.com/questions/ask).

Hi . Welcome to Phys.SE. This post reads more like a comment than an answer so I'm deleting it.

Hi . Welcome to Phys.SE. This post reads more like a comment than an answer so I'm converting it.

Hi . Welcome to Phys.SE. This post was flagged by an anonymous user as _not an answer,_ so I'm deleting it.

Not a question:

Hi . Welcome to Phys.SE. This post asks hypothetical questions outside accepted standard physics theories, such as, e.g., asking about a massive object traveling at the speed of light. Fictional questions are off-topic, cf. [faq]. If you can modify your question, so it stays within the realm of standard physics, I would be happy to reopen it.

This question seems closable since a straightforward Google search would immediately provide the answer, cf. e.g. [this](http://meta.physics.stackexchange.com/a/9/2451) and [this](http://meta.physics.stackexchange.com/a/121/2451) meta post.

The question currently has 3 migration votes. The question seems to be enough physics-inspired not to migrate to [math.se], so I'm temporarily closing it as a duplicate to avoid migration.

Homework:

It seems the homework tag applies even if it is not actual homework since it is of the form 'please check my work'.

Hi . Welcome to Phys.SE. If you haven't already done so, please take a minute to read the definition of when to use the [homework-and-exercises](http://physics.stackexchange.com/tags/homework-and-exercises/info) tag, and the Phys.SE [policy](http://meta.physics.stackexchange.com/q/714) for homework-like problems.

In accordance with our [homework policy](http://meta.physics.stackexchange.com/q/714), I'm temporarily deleting this.

Hi . Welcome to Physics. Please see [our homework policy](http://meta.physics.stackexchange.com/a/715/7433). We expect homework problems to have some effort put into them, and deal with conceptual issues. If you edit your question to explain (1) What you have tried, (2) the concept you have trouble with, and (3) your level of understanding, I'll be happy to reopen this. (Flag this message for ♦ attention with a custom message, or reply in the comments with `@username` to notify a moderator).

Hi . Welcome to Phys.SE. Please don't repost a closed question in a new entry. Instead, you are supposed to edit the original question within the original entry.

Hi . Welcome to Phys.SE. The Phys.SE community is trying to discourage HW questions, so I'm temporarily(?) deleting this answer.

I'm closing this homework-like question as too localized, in part because both OP and the community seem indifferent.

Self-promotion:

Dear . Welcome to Phys.SE. For your information, Physics.SE has a [policy](http://meta.physics.stackexchange.com/q/582/2451) that it is OK to cite oneself, but it should be stated clearly and explicitly in the answer itself, not in attached links.

Cross-list:

Dear . In general, it is frown upon to cross-post simultaneously, because it may waste potential answerer's time. As a minimum OP should mention the cross-post (on both sites!). The preferred procedure is to not cross-post, and if the post hasn't received an acceptable answer after, say, a couple of days, then OP could flag for migration.

Dear . It is often frown upon to post nearly identical [answers]() to similar posts. In such cases, it is often better to just flag/comment about duplicate questions, so they can get closed.

Dear . It is usually frown upon to directly copy-paste [identical answers](). (The problem is if everybody start to copy-paste identical answers en mass.) In general in such situations, please consider one of the following options: (i) Delete one of your answers. (ii) Flag for duplicate posts and delete one of your answers. (iii) If you think the two posts are not duplicates, then personalize each answer to address the two different specific questions.

Improvement:

Dear , if u don't like my changes please roll back or use the parts u like.

It would be good if OP (or somebody else?) could try to make the question formulation self-contained, so one doesn't have to open the link to understand the question.

A reader should be able to tell whether the question is interesting to him, or not, before he has to click any links. In general, the pleasure and usefulness of browsing Phys.SE greatly diminish if one has to open documents to decide which content to read.

Tip: Consider to reformulate question purely as a physics question without an explicit resource request. All questions are implicitly resource requests. Explicit res. recom. qs are restricted on Phys.SE.

Minor comment to the post (v1): In the future please link to abstract pages rather than pdf files, e.g.,

Minor comment to the post (v1): In the future please link to desktop Wikipedia pages rather than [mobile Wikipedia pages](https://en.wikipedia.org/wiki/Wikipedia:Enable_mobile_version), e.g.

Minor comment to the post (v1): Please consider to mention explicitly author, title, etc. of link, so it is possible to reconstruct link in case of link rot.

Consider to spell out acronyms.

General tip: Look in the right margin for related questions.

General tip: Put keywords in the tag line, not in the title. Use the title for the actual question.

Did you check the definitions on Wikipedia?

Suggestion: Permute the commas and dollar-signs to avoid flying commas.

Hi . Welcome to Phys.SE. Linking to private clouds, dropbox, etc, is for various reasons not acceptable on SE, cf. [this](https://physics.meta.stackexchange.com/q/11400/2451) meta post.

Hi . Welcome to Phys.SE. Posting computer-generated text from ChatGPT, etc, is for various reasons not acceptable on SE, cf. [this](https://physics.meta.stackexchange.com/q/14281/2451) meta post.

General tip: On Phys.SE it is preferred if you can formulate your question as an actual physical question rather than a res. recom. q. For the reader this is often the difference between actually learning something as opposed to reading yet another to-do list.