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If we stick two block masses by a string and pass it over a pully and let the blocks free then mathematically we can obtain that the whole weight on...
Asked on 05/22/2021 by Soubhadra Maiti
4 answerAs shown in the diagram above, the object with thrust $T$ exerts a force downwards towards the Earth. The Earth also...
Asked on 05/22/2021 by Hew Jhong
2 answerFirst, we shoot a collection of particles (let's exclude gravitons from these, just for the sake of clarity) through a large region of spacetime in which the stress-energy tensor is...
Asked on 05/22/2021
3 answerI am reading about the uncertainty principle and its stated that we can not simultaneously determine the position and momentum of a photon. But my question is, if you know...
Asked on 05/22/2021 by Tommy Wong
1 answerThe problem is as follows: Show that when tachyons interact with normal particles, then a normal particle can emit a tachyonso that the total energy and 3-momentum are conserved....
Asked on 05/22/2021 by aLLiteration
0 answerI am trying to calculate the Electromagnetic fields from a massless charged particle. I am trying to reproduce the starting results given in the "Electromagnetic fields of...
Asked on 05/22/2021
1 answerSuppose we have two particles with spin $1/2$. They have $S^{tot}=1$ and $S^{tot}_y=0$.How can we write the state of the system in terms of the eigenstates...
Asked on 05/22/2021
2 answerMy question is simply how the highlighted equations at the bottom of the following article are obtained. In particular I cannot seem to understand where the term containing external pressure...
Asked on 05/22/2021
1 answerI have a problem with understanding basic concept about enthalpy.I know there is an enthalpy (heat) of formation which tells how much energy is going to be released or consumed...
Asked on 05/22/2021 by Łukasz
2 answerHere is a picture from my engineering textbook. It describes a concrete slab being subjected to normal force $P$...
Asked on 05/22/2021
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