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HNQ
2:09 AM
1
Q: Derivation of Coulomb's law from Maxwell's equations

Lorenzo VanniI'm trying to find sufficient additional conditions to derive Coulomb equation for the electric field generated by a steady point charge in free space from Maxwell equations in said conditions. I know that a way to do this is assuming that the solution of Maxwell equations must have spherical sym...

 
HNQ
2:54 AM
2
Q: Which Potentials lead to Kepler's second Law?

16π CentWhich type of potentials lead to Kepler's second law "same area in same time"? $dA=\frac{1}{2} \vec{r} \times \vec{dr}$ $\frac{dA}{dt}=c=\vec{r} \times \frac{\vec{dr}}{dt}=\vec{r} \times \dot{\vec{r}} $ Deriving both sides we can get a statement on the force field $\dot{\vec{r}} \times \ddot{\vec...

 
 
19 hours later…
HNQ
10:16 PM
1
Q: Would a giant ball on earth roll towards the poles?

AlphaLifeThe radius of the earth is higher at the equator than at the pole. Would it mean then, that if I put a giant ball at the equator, it would roll up towards the pole? Why, why not?

 

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