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There have been many questions and excellent answers in this community about the symmetry of snowflakes, e.g., here and here. There is however one aspect of snowflakes that...
Asked on 02/04/2021
1 answerA hypothetical signal is emitted from a known exoplanet thousands of light years away. The signal marks the occurrence of an epoch-worthy event on that planet, and we (the receivers)...
Asked on 02/04/2021
2 answerI have to calculate the current I and the voltage between a and b using the superposition theorem. I can solve this directly by calculating the voltage between points, but...
Asked on 02/04/2021 by Samuel Ochoa
2 answerIt is about a particle with mass $m$ in a potential $V(x)$: I want to do a graphical determination(at first only the...
Asked on 02/04/2021 by physics
1 answerI’m referring to an instant in time where the velocities of two different particles are identical. One particle experiences a force and the other does not. I think their states...
Asked on 02/04/2021 by Nectac
3 answerI've worked problems in the past in trig class concerning the effect of wind on the speed of a plane and it's flight path and was wondering if a similar...
Asked on 02/04/2021 by Electrondotts
3 answerI'm going through problems in Quantum Field Theory for the Gifted Amateur, and have been trying to understand a problem on the forced quantum oscillator [$L = frac{1}{2}dot{x}(t)^2-frac{1}{2}momega^2x(t)^2+f(t)x(t)$ ] and...
Asked on 02/04/2021 by pongoS
1 answerIn Weinberg's Gravitation and Cosmology, the author mentions that an infinitesimal Lorentz transformation (in the four-vector representation of the Lorentz group) has the form $$Lambda^{alpha}_{phantom{alpha}beta}=delta^{alpha}_{phantom{alpha}beta}+omega^{alpha}_{phantom{alpha}beta}.tag{$dagger$}$$ It is then straightforward...
Asked on 02/04/2021 by Jilal Jahangir
1 answerWhy are the Lagrangian points $L_1$, $L_2$ & $L_3$ unstable? I am doing a physics presentation in front of my class and I am just confirming this...
Asked on 02/03/2021 by James Haskell
3 answerI have a capacitor, and between them I have an array of electrodes stacked orthogonal to the capacitor plates. The capacitor is running an AC current, and the electrodes are...
Asked on 02/03/2021 by Tsangares
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