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Generally in text books they say that when a electron goes from high energy state to a lower energy state it emits photons.My question is, it is possible that...
Asked on 06/08/2021
7 answerSuppose $g_{ij}$ is a symmetric tensor describing the geometry of a 4d spacetime. Then I know for example, that if the metric contains "mixed terms" (like $dtdx$) then...
Asked on 06/08/2021 by mathripper
0 answerHow is it with the electrostatic induction measurement? Everywhere you can read about the effect of electrostatic induction but I still can't found any detailed explanations or quantitative measurements. Perhaps...
Asked on 06/08/2021
1 answerWhat is the integral form for the Gauss Law for Electric Fields? or ?...
Asked on 06/08/2021 by arthurg
2 answerI'm trying to understand the equation of motion for rigid body dynamics in the presence of a quaternion joint for the root of a humanoid robot. But the dimensionality inconsistency...
Asked on 06/07/2021 by soshi shimada
1 answerI don't know how to calculate the energy density in four dimensions. I know the density of states is$$g(varepsilon) = g_sfrac{4pi V}{h^3c^3}varepsilon^2; quad g_s = 2$$...
Asked on 06/07/2021 by Fito Meza
0 answerSuppose a body (say $5text{ }kg$) is kept at rest on a horizontal table of some friction coefficient (say $0.2$). If a force of $20text{ }N$ is...
Asked on 06/07/2021 by user262060
2 answerBased on my own research, I found a general solution that can model a pendulum found on an accelerating train. The following solutions are based on small angle approximations. F=-mgsin...
Asked on 06/07/2021
1 answerI can't find an answer for whether the Double Pendulum equations can be derived solely using Newtonian Mechanics (Newton's Laws of Motion). The reason I ask for this answer is...
Asked on 06/07/2021 by Prithvidiamond
2 answerWhen studying unitary transformations in QM, most of the textbooks I used defined the unitary transformation operator as $$ hat{U}(alpha) = e^{-i alpha hat{G}} , , , $$ where...
Asked on 06/07/2021
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