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May
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revised Why not shoot a marble sized spacecraft at the moon?
added 114 characters in body
May
7
revised Can we divide two vectors?
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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
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answered Can we divide two vectors?
May
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revised Why not shoot a marble sized spacecraft at the moon?
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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?