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In other words, is it assumed that the fluid density is constant after expansion and through the time development of an expanding universe?...
Asked on 07/09/2021
1 answerWhen I was disassembling my R/C quadcopter, I had to take out the screw holding the plastics. As i completely unscrew one of the screw near the brushed DC motor,...
Asked on 07/09/2021 by Pushies
0 answerThe hamiltonian is written as$$H_{int} =hbarmu(a^{dagger 2}b+a^{2}b^{dagger}),$$where $b$ and $a$ are the are the annihilation operators for the pump and signal modes, and $mu$...
Asked on 07/09/2021 by August.C
0 answerAfter learning about the production and propagation of electromagnetic waves I've become a bit stuck in my understanding of how to think of the electric and magnetic fields that make...
Asked on 07/09/2021 by James Blissett
3 answerThe voltage divider formula is only valid if there is no current drawn across the output voltage, so how could they be used practically? Since using the voltage for anything...
Asked on 07/09/2021 by Ziad Khayat
8 answerHi this is my first time posting so please feel free to correct me on any formatting errors I may make. I understand that as a capacitor charges, the amount...
Asked on 07/09/2021 by Kouzan
2 answerI am trying to understand the physics behind a single sailed boat. I have read the following questions Sailing against the wind. Is this a fair model? What...
Asked on 07/09/2021
3 answerI'm new to the Physics SE, coming from a pure math background. I think my question is full of incomprehension and lack of basic knowledge, but here goes. I'm trying...
Asked on 07/09/2021 by acephalous
2 answerI have a question that would probably be easy for you. If we could put an elevator together with its shaft on a scale and have its motor pull it...
Asked on 07/08/2021
2 answerI've just started learning about special relativity. Apart from realising that everything I thought I knew about reality was a lie, I'm trying to wrap my head around a few...
Asked on 07/08/2021
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