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In a collider experiment, the Luminosity is defined as the proportionality factor between the interaction rate and the interaction cross section $dN/dt = Ltimessigma$, with units of $cm^{-2}s^{-1}$....
Asked on 09/19/2020 by Arturo Rodriguez
2 answerThe two images below are from different books. One has the $hbar$ in the root below which seems right to me as that gets the dimensions correct but...
Asked on 09/19/2020
2 answerI'm looking for William Burke and Peter Scott's Special Relativity notes. They are very useful as they use a novel approach to space-time diagrams. I used them long ago, but...
Asked on 09/19/2020 by Dirac
2 answerSo i'm a bit confused about something. If we take a mathematical pendulum and we apply a force to it. We ignore all friction and air resistance and only consider...
Asked on 09/19/2020
1 answerWe all know that the sun generates its energy from nuclear fusion in the core. The electromagnetic radiation produced slowly travels upwards, while constantly being absorbed and re-emitted by the...
Asked on 09/18/2020 by Felis Super
4 answerI have a hollow cylinder made of material A (eg. glass).Inside the cylinder I have some liquid (material B, eg. water). On the outside of the cylinder, wrapped around...
Asked on 09/18/2020 by Dubi Katz
0 answerI know that this is a homework type question and I'm not asking a particular physics question, but I'm really desperate for help. Here's the question: ...
Asked on 09/17/2020 by Lenol
1 answerThe SMOT device described in Wikipedia is said to cause a metal ball to roll uphill and then fall off the ramp. I understand that perpetual...
Asked on 09/17/2020 by stackex555
1 answerWhen reading Mechanism for ordinary-sterile neutrino mixing it is stated in the abstract that: "(...)sterile neutrinos can occur only if Dirac and Majorana mass terms exist which...
Asked on 09/17/2020
1 answerI have a cantilever beam that is resting against a wall (not fixed) and will not slide (strictly looking at bending moments). The beam of length = 0.3m is under...
Asked on 09/17/2020 by Veelox
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