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Questions related from Newgato Chiro
Hello, I want to simulate the propagation of some guided waves in plates, with spatially dependent stiffness tensor. Can do that with COMSOL. Thank you in advance, I am new to COMSOL, and I...
01 January 2020 7,606 1 View
Hello To start off, the question deals with non relativistic system. It is known that Biot-Savart law gives the magnetic field at position r (the position of the observer) , created by a...
09 September 2019 915 4 View
Hello, I have a block of solid material in which an elastic wave is propagating. On one side of the block I maintain a static surface stress (the agent causing this stress is external to the...
07 July 2019 514 8 View
Hello, The real problem is : I have magnetic material (magnetized) that is deforming in time (let's say, because of vibration) with respect to the reference frame of the lab, I want to know,...
04 April 2019 2,900 3 View
Hello, I have a wire with AC current : ## Ohm's law gives : J = \sigma E J : the current density \sigma : the electric conductivity E : the electric field From this equation it is clear...
04 April 2019 5,648 3 View
Hello, Are we (me excluded) sure that an electron is a particle ? If not, is its nature "countable" ? Today if someone asks you to show them (experimentally of course) what is the number of...
02 February 2019 7,603 7 View
Hello, Suppose I have a charge at rest, my question is, since the electric field of this charge will "go" to infinity for eternity, where does the energy come from to maintain that field. We all...
12 December 2018 4,562 20 View
Suppose I have a coil placed above a conducting non magnetic plate, I run an AC current in the coil, and I want to know what is the mutual induction between the coil and the plate ? Thank you in...
12 December 2018 9,788 3 View
Hello everyone Suppose I have the next example (see figure) : I have two experiments : I know the input current in the first coil, and from it I compute the induced current in the second coil...
11 November 2018 7,786 4 View
Hello, I want to know, if there are materials that are magnetic but non electrically conductive. I already thought of Ferrit-NiZn, and some composites, however I wonder there are others. Thank...
10 October 2018 3,729 3 View
Hello, I have a problem understanding Gauss's law for electric field. I know that, if I have a distribution of static charges, the divergence of their electric field is equal to the charge...
10 October 2018 1,577 0 View
Please give physical or mathematical proof. Thanks in advance
07 July 2018 4,594 3 View
Is there an experiment that was done ? Did we assume something down the line when proving this mathematically, or do we assume it ? Thanks in advance
07 July 2018 251 0 View
I have this question, I have an aluminium plate (or any electrically conducting plate), I place two contact electrodes on its surface so a current will flow between the electrodes, I then place...
07 July 2018 2,262 3 View
Hello everyone I have a very simple question : as given in the fig, I have two identical charged particles, in the first experiment, the particles are at rest in the reference frame of the lab...
04 April 2018 7,043 7 View
Hello everyone, Suppose I have a permanent magnet placed above a ferromagnetic plate at distance d, suppose also that the magnetic field is uniforme over a surface S, and is 1T. What is the...
03 March 2018 4,343 5 View
