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As the solar system formed, why didn't all of the heavier elements such as iron, collect where the sun is leaving the lighter elements in the outer solar system?...
Asked on 09/30/2021
3 answerConsider the following clip of ice melting on sand: I'm intrigued by the fact that the sand below the ice lifts as the ice melts and the...
Asked on 09/30/2021 by concat
2 answerIf dark energy drives a repulsive force between galaxy clusters, proportional to their distance which makes space expand, which creates space between them, and gravity between the clusters has the...
Asked on 09/30/2021
2 answerAs in, why is newton's second law(for constant mass systems), $$ F= m frac{d^2 x }{dt^2}$$ and not something of the sort like $$ F= m frac{d^3 x...
Asked on 09/30/2021
3 answerI have a trouble with a simple question (I think). Well, if a have a tank full of compressible air at a pressure of for example 6 bar and a...
Asked on 09/30/2021 by Polo AM
2 answerI was recently doing a question on a spring block system and I was just suddenly weirded out by the fact that regardless of how much momentum or energy the...
Asked on 09/30/2021
5 answerIf you have a conducting hollow sphere with a uniform charge on its surface, then will the electric field at every point inside the shell be 0. The reason the...
Asked on 09/30/2021 by Tabish Mir
2 answerHow are the equations for rotational motion derived using calculus and the following general equations ? $$mathbf{v}(t) = mathbf{v}_0+int_{t_0}^t mathbf{a}(t')dt'$$ $$mathbf{r}(t) = mathbf{r}_0+int_{0}^t mathbf{v}(t')dt'$$ Let $a(t) = alpha$ Also, can...
Asked on 09/30/2021 by James Bap
2 answerThis question is motivated by Section 3.2.3 in Griffiths' book on Electrodynamics. I am trying to calculate the force of attraction exerted on a point charge by an induced charge,...
Asked on 09/30/2021
3 answerGoldstone's theorem says that if a group, $G$, is broken into its subgroup, $H$, then massless particles will appear. The number of massless particles are given by the dimension of...
Asked on 09/30/2021 by JeffDror
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