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This blog focuses on the facts which are present in our day to day life. No copyrighted content will be published here. This blog does not entertain any plagiarism. The contents of the blog can be shared by other users. If you have any complaint regarding the content you can contact me. 

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The window has a surface of 1.5 m2*... *The compartment has a volume of 12 m3*... *The train speeds 80 kph to the west*.The south wind is blowing at 5 mps*...*How quickly will the space be refreshed?*

Train  speeds at 80kph i.e 22m/s The train is moving towards west (22m/s) and wind to south which is (5m/s)  So resultant wind through w...