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 Feb 1 awarded Yearling Jan 15 awarded Favorite Question Nov 7 awarded Nice Question Sep 24 awarded Popular Question Aug 13 awarded Good Question Jul 19 awarded Notable Question Jun 25 awarded Popular Question Jun 7 awarded Famous Question Jan 4 awarded Popular Question Jul 2 awarded Curious Jun 17 awarded Notable Question May 7 revised Why not shoot a marble sized spacecraft at the moon? added 114 characters in body May 7 revised Can we divide two vectors? deleted 12 characters in body May 7 comment Can we divide two vectors? @JerrySchirmer oops, right. You can only determine the component that's normal to $\vec{B}$. Thanks! May 7 comment Can we divide two vectors? I see nothing wrong with your answer. May 7 answered Can we divide two vectors? May 6 revised Why not shoot a marble sized spacecraft at the moon? added 309 characters in body May 6 comment Why not shoot a marble sized spacecraft at the moon? @Draksis Thanks, I will clarify it. While inertia is not a true force it is sometimes (fluid dynamics useful to refer to it as a force. For example Navier-Stokes equation can be seen as balance of inertial force and pressure, viscuous and other body forces. May 6 comment Why not shoot a marble sized spacecraft at the moon? @Draksis The volume decreases faster than area so surface forces get relatively bigger compared to volume forces like gravity and inertia. May 5 answered Why not shoot a marble sized spacecraft at the moon?