Can I submit an article to Ezine, and later submit the same article to goarticles?

Technically yes you can but should you want to do it? NO! The reason being Google will detect duplicate content and that is likely to affect your website badly. Use the same theme and topic but mix up the words a bit. Shouldn't take you more than 10 mins to do.

 

ezine says they would also publish an article or post that has been on your main site for some time but only if it is a very good piece.
but i would not do that even if they want it cause they will most likely rank better than me using my post so i will loose rank

 

You can, but this can't worth much more as sometimes search engine penalty duplicate content. I suggest you to re-write your article by making some word changes & then submit. If you have any re-writing software this could be better.

 

Get it approved by ezine first and then rewrite the article for other sites. Its good to rewrite each time when you submit to a site with high pr. There are many article rewriting tools available.

 

Ezine will not accept content that even SMELLS like it was taken from anywhere else. Post 100% original content to Ezine and then spin it for the other directories.