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Wikipedia lists this formula asAngle θ required to hit coordinate (x, y) It is used to determine the...
Asked on 01/22/2021 by TwistyTurtleFish
2 answerConsider a quantum system $S$ in superposition of two state,with an observer $A$, forming a bigger quantum system $S'$, with observer $B$. At $t=0$, observer...
Asked on 01/22/2021
0 answerI know that as a car accelerates on earth, for the car-earth system angular momentum is conserved. Attached is a nice animation for simplistic proposes.https://www.animations.physics.unsw.edu.au/jw/momentum.html However,...
Asked on 01/22/2021
1 answerLet's say that, from my point of view, another observer is accelerating. Now, from his point of view, he is standing still: all he feels is an overall fictitious...
Asked on 01/22/2021
4 answerAssume that a certain distribution of charges $rho$ generates an electrical field $E_{ext}$ in the surrounding space. We also note the corresponding generated potential $V_{ext}$. Assume furthermore...
Asked on 01/22/2021 by MikeTeX
0 answerI have been learning some field theory and learning about Lagrangian and Hamiltonian density. In classical mechanics, the Hamiltonian is the energy of the system in terms of position and...
Asked on 01/22/2021 by Smitology
1 answerI'm having some trouble understanding Ohm's law. My trouble is with the different ways it is described when referring to ohmic and non-ohmic conductors. If someone can answer this question...
Asked on 01/21/2021 by user45220
2 answerAccording to what I've learned, when two electrons repel each other, photons are exchanged between the electrons, and gluons are exchanged between quarks in a nucleus. However, in beta decay,...
Asked on 01/21/2021
0 answerOn page 10 of this paper on quantum field theory. There is the integral: $$ln(N(T)) propto iiintlimits_{-infty}^{infty} ln (sinh(T omega_k)) d^3k$$ where $omega_k$ is the...
Asked on 01/21/2021
0 answerNeutrons are neutrally charged, but apparently they have magnetic moments with spin. What is the intuition behind this?...
Asked on 01/21/2021
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