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I have written a mobile app that measures x y z accelerations. I am trying to convert the acceleration results into displacement but dont think a simple $d=frac 1 2...
Asked on 01/02/2021
2 answerIn math books, I saw the metric tensor is defined with the use of the Jacobian matrix as $$g_{mu nu}=J_{mu}^a : J_{nu}^b : eta_{ab}tag{1}$$ where $J_{mu}^a=frac{partial bar{x}^a}{partial x^{mu}}$...
Asked on 01/02/2021 by Eddward
2 answerI would like to know if a small electric current can be created in a closed loop of wire by using a strong electric field to move the free electrons...
Asked on 01/02/2021
1 answerIsing model consists of up spin and down spin or empty/filled space. Can we model random walk for different densities of packing through the Ising model? ...
Asked on 01/02/2021
2 answerSo let's say power to be delivered to homes is 80kW($P_3$=80kW) and the houses have to receive it at 220V($V_3$=220V). The substation is a 4000V to 220V step...
Asked on 01/02/2021
1 answerI am deriving the wave equation, in the derivation, it is considering no spatial variation in the perpendicular, in-plane y-direction and the wave is propagating along the x-axis such that:...
Asked on 01/02/2021 by ketan karkare
0 answerI'm aware that refractive index usually correlates with density. I'm curious to know if there are strong counter examples to this rule. In particular I'm interested to know if there...
Asked on 01/02/2021 by alcorn
1 answerWhile walking, the work done by friction is zero.But who does the work, actually? How someone is getting displaced?This situation also arises when someone climbs without slipping or...
Asked on 01/02/2021 by kakan
10 answerCould someone tell me what's the Schwinger-Dyson equation for connected correlation functions? I'm looking for a formula that relates a connected $n+1$-point function to connected lower point functions. More...
Asked on 01/02/2021 by Oblonski
0 answerElectron flow in Cathode Ray Tube? In a TV CRT, electrons from the cathode go pass the anode and strike the TV screen to produce the picture. It seems that,...
Asked on 01/02/2021
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