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"Two pendulums with the same mass and length $R$ are released from rest. The first pendulum is released from an angle of $theta_1 = -2º$, and the second...
Asked on 02/16/2021 by tmvaz
2 answerWhy is the direction of propagation of a wave perpendicular to the wavefront at each point? I know this sounds intuitively true, but a simple mathematical proof would be very...
Asked on 02/16/2021 by Shivansh J
1 answerI assume the formation of $rm N_2$ and $rm O_2$ molecules is energetically favorable compared with N2O, NO, and NO2, etc., but are there some more intuitive...
Asked on 02/16/2021
1 answerI studied electromagnetism and I am currently working with Inductors. I could not figure out the physical reason based on electromagnetics on why inductor current lags the applied voltage by...
Asked on 02/16/2021 by VKJ
5 answerHi: I've read this post: Uniform Circular Motion w/ Tension and Friction and helped me a lot. I have a similar problem:At one end of the rope...
Asked on 02/16/2021 by Diana Arosemena
1 answer$3$-acceleration can not be constant in a relativistic system. Because $vec a^2$ is not Lorentz invariant. Does it mean that Lorentz invariance works only for $4$-vectors? How...
Asked on 02/16/2021 by Constantin
1 answerThe original question was evidently far too long to fit into the title, so I'll post it here in the body:"If two non-ionic tungsten atoms spontaneously popped into existence at...
Asked on 02/16/2021 by owlsupport
1 answerQuestion is: How is the set of states $Q$ logically replaced by a Hilbert space if a classical Turing machine is described by a 7-tuple $M=langle Q,Gamma, b,Sigma,...
Asked on 02/16/2021 by Jack Rock
1 answerIn this image (source) a potential double-barrier was created using GaAs and AlAs lattices (undoped). Why would any potential barrier be formed, if all the bonds...
Asked on 02/16/2021
1 answerOn p.169 of Dodelson's Modern Cosmology, the following is stated: "We can compute the quantum fluctuations of the operator $hat{x}$ in the ground state $|0rangle$:$$ big...
Asked on 02/16/2021 by Thomas Bakx
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