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Open Physics 2.5 -
EC Praxis 3J 5.0
Trialr Home->Education->Science
![RSS[Education::Science]](http://www.trialr.com/images/rss.gif)
Downloading [Orbit Xplorer 2.0] ...
Educational orbit and gravitation simulator for high school and college physics
Your download should begin shortly. If it does not, use this direct link to download it again.