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When trying to find the Fourier transform of the Coulomb potential $$V(mathbf{r})=-frac{e^2}{r}$$ one is faced with the problem that the resulting integral is divergent. Usually, it is then argued to...
Asked on 06/04/2021
7 answerSo, this is how the problem looks: Plus, the pulley is suspended on a cord at its center and hanging from the ceiling. You're...
Asked on 06/04/2021 by user20250
1 answerThere is always some amount of light reflected on the interface of the surface of denser to rarer medium. I just want to know, how much of light is actually...
Asked on 06/04/2021 by Om G
0 answerDoes gravity have anything to do with Van Der Waals forces? Just throwing this out there, I was wondering if they do because gravity is such a...
Asked on 06/04/2021 by Sam Cottle
3 answerI am confused about this concept of central force motion. We have read that object undergoing a change in velocity must possess acceleration. However, in elliptical orbit motion gravitational force...
Asked on 06/04/2021 by Mirae
4 answerOne can calculate the Reynolds number to determine whether or not flow is turbulent or not inside a pipe with circulating water. The formula is: $Re = frac{rho VD}{mu}$...
Asked on 06/04/2021 by Physther
2 answerThis question came up watching a final sprint at the Vuelta San Juan this year. One of the riders was sitting down in the sprint because he had "spun out"...
Asked on 06/03/2021 by Ryan C
1 answerImagine that a mast of a sailboat is $186,000$ miles long, and the sailboat is moving to the right at a constant $10$ miles per second. If you...
Asked on 06/03/2021
4 answerConsider suspending a charge inside a conductive sphere: The answers to this question state that there will be a charge...
Asked on 06/03/2021
1 answerThe speed of sound in materials of various states of matter differs a lot. But does it have fundamental limits?Is there a maximal possible speed of sound? Is...
Asked on 06/03/2021
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