User talk:Rusty20

August 2020
Hello, I'm DVdm. I noticed that you added or changed content in an article, Centripetal force, but you didn't provide a reliable source. It's been removed and archived in the page history for now, but if you'd like to include a citation and re-add it, please do so. You can have a look at the tutorial on citing sources. If you think I made a mistake, you can leave me a message on my talk page. Thank you. - DVdm (talk) 16:31, 21 August 2020 (UTC)

Please do not add or change content, as you did at Solid angle, without citing a reliable source. Please review the guidelines at Citing sources and take this opportunity to add references to the article. Thank you. - DVdm (talk) 16:33, 21 August 2020 (UTC)

Note: This and this does not qualify as a wp:reliable source for Wikipedia. You will need relevant wp:secondary sources to establish noteworthyness of the content. Are you by any means related to Russell D. Patera, the author of these articles? If so, please be aware of our guidelines regarding conflicts of interest. - DVdm (talk) 16:41, 21 August 2020 (UTC)