Source of AC
When a circuit is being alimented by AC this means that exist in the circuit a voltage source that is generating the AC or exist a current source that is generating the AC?
View ArticleClik here to view.
Can conservation of angular momentum cause rotational phase shift??
So, I'm trying to study phase shift in an unbalanced rotating system (where "phase shift" means the resulting response of orbital motion lags behind in time/position relative to the force that's...
View ArticleTransformer for a power supply
I am going to make a power supply. I understand the smoothing capacitor and the full-wave bridge rectifier. I am trying to make a 60V, maybe 10A power supply - maybe only 5A, but I would prefer 10A. I...
View ArticleAssociation of sources in Δ or Y
Is possible to associate voltage sources and current sources by a delta scheme or by star scheme?
View ArticleClik here to view.
Flow work Vs PdV work
Hello friends, Referring to the attachment it can be clearly understood that flow work in an open system is a form of the PdV work defined as the boundary work or displacement work for a closed system....
View ArticleGauss' Law and Conductors
For an infinite plane sheet of charge it is obvious that the E-field points directly perpendicular to the sheet. but for conductors of irregular shape. say, a wire, or even a sheet with imperfections...
View ArticleClik here to view.
self field of a particle as a superposition of polarized plane waves
Hello. I've got a question. If we've got a fourie-transformation of charged particle field, , is possible to represent real particle field as a superposition both vertical and horizontal polarized...
View ArticleConics and beyond
When a object of mass non insignificant is traveling in space and is sob influence of one gravitational field, the trajectory described by this object is a conics (Ax²+Bxy+Cy²+Dx+Ey+F=0), but and if...
View ArticleMaxwell Boltzmann Distribution
I don't know how to integrate the Maxwell-Boltzmann distribution without approximation or help from Maple. Given the Maxwell-Boltzmann distribution: [tex]f(v) = 4\pi\left[\frac{m}{2\pi...
View ArticleClik here to view.
Change in GPE and Ek as object approaches a planet
This is not a homework question. Whilst looking over at previous exam papers on classical physics, I came across this question in the attachment. I always assumed gravitational potential energy...
View ArticleCircular motion vertical force
Hi everyone, If you have a horizontal circular motion (with gravity action on the object), what holds the object up in the horizontal plane? All vertical components of the tension go to zero when the...
View ArticleIs it possible to identify something with sound?
Is it to identify something (not necessarily very accurately but at all) with sound? Also, i know its possible with light but i don't exactly understand how, can someone explain?
View ArticleCan someone explain these equations?
Hello, Can someone explain what's going on in equations 196 and 197: http://farside.ph.utexas.edu/teachin...e30.html#e5.23 Thanks.
View ArticlePressurized vessel emptying
Hello, I I need to simulate emergency draining of a steam generator (using Octave). I have a pressurized tank: 3m3in total. Pressure in the vessel is 40 bar(a).Inside the vessel there is 2.2 m3 of...
View ArticleElectrodynamics text study guide?
There is a book with very briefly theory, showing the essentials for make the exercices of electrodynamics, and also with solved exercices? Similar to Kubo of Statistical Mechanics (but of...
View ArticleMany Bicycle Questions
1. Static friction cannot do work (correct?). Yet that is the only external force acting on an accelerating bicycle. How can these two ideas jibe? My thought is that the human is like a battery with...
View ArticleAnother vector fields in terms of circulation and flux
Why others vector fields no are studied like the magnetic and electric fields? In other words, why others vector fields, like the gravitational and the hydrodynamic, haven't "supreme laws" based in the...
View ArticleQuestions about thermodynamic relations
We know that for constant pressure thermodynamic processes which only expansion work is possible, dH=dQp. My question is, is it necessary that both work W and Qv be reversible to arrive this relation?...
View ArticleClik here to view.
how to derive the curl of E equation in the frame of the conductor?
According to wikipedia, "The moving magnet and conductor problem", I stopped at the equation shown in the attachment. It said that the curl of the E` ( electric field in the frame of the conductor) is...
View ArticleTime-Dependent Classical Lagrangian with variation of time
Hello everyone! I was reading the following review: http://relativity.livingreviews.org/...ticlesu23.html And I got stuck at the first equation; (10.1) So how I understand this is that there are two...
View Article