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In Finn's Thermal Physics (equation 2.4), the Young modulus $Y$ of a stretched wire with tension $F$ is given to be $$Y = frac{L}{A} left( frac{partial F}{partial...
Asked on 01/29/2021 by 13509
1 answerThis seems to be an absurd question, but bear with me. In quantum field theory, the Dirac fermion mass Lagrangian term reads$$mbarpsi psi = m(barpsi_L psi_R +...
Asked on 01/29/2021
2 answerSo I was reading through Becker, Becker, Schwarz and there is a line in the second chapter that states that $h^{alpha beta} = (h_{alpha beta})^{-1}$ where $h_{alpha...
Asked on 01/29/2021 by Rahul S.
1 answerIn our antennas and fields course, we had one task where we simulated a line antenna in an incident plane wave. There, we specifically looked at the fields produced by...
Asked on 01/29/2021 by Uroc327
0 answerConsider a quantum system that is governed by a Hamiltonian with explicit time dependence $H(t)$. Is it always legitimate to perform a Wick rotation $t rightarrow -itau$, and...
Asked on 01/29/2021 by mrbug
1 answerGiven a streamline, is it possible that the velocity at some point on it is non-zero but then at some other point(for example, stagnation point) it is zero? I mean...
Asked on 01/29/2021
1 answerDuring non-uniform circular motion, the direction of net acceleration is not in the direction of the centripetal acceleration, then why does a particle still move in a circular path, please...
Asked on 01/29/2021
3 answerI would like to ask if this expression makes sense.$$|Ψ⟩ = frac{1}{sqrt{7}}(|1000000⟩+|0100000⟩+|0010000⟩+|0001000⟩+|0000100⟩+|0000010⟩+|0000001⟩)$$ For example, $|1000000⟩$ represents one particle in the first mode. Can I interpret $|Psirangle$...
Asked on 01/29/2021 by Tomáš Kubalík
0 answerConsider the following diagrams: Question:Why in thermal equilibrium—the Fermi energy level is constant throughout the entiresystem? I know the following explanationA gradient in the Fermi level is the...
Asked on 01/29/2021
1 answerAs an example of a qubit, one take the polarisation of a photon in which the two states can be taken to be vertical and horizontal polarisation, respectively. Rotation of...
Asked on 01/29/2021
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