calculating Gauss of electromagnet
It's been many years since I studied this so I would appreciate some confirmation on the formula and its parts. The formula I was taught to calculate the Gauss of an electromagnet was: B=MNI/2R with: B...
View ArticleQuestion regarding Hall sensor/effect wrt q(VxB)
If a make some basic assumptions about a standard hall probe I find, quite expectedly that the velocity of the charge carriers is of the order 10-5 m/s. In a hall probe measuring the earths magnetic...
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Can someone verify a computational result for me?
This is for a computational physics class, but isn't a homework question, per se. My friend and I have two different sets of code trying to achieve the same thing and we're getting vastly different...
View Articlewhat is acoustic lenth
What is acoustic length in a pipe/tube? On a physics lab, the lab write up mentions it but it doesn't explain what it is. I know it's give by L = λ/4 and higher ones will be odd multiples of the first...
View ArticleHow can I simulate PSF of incoherent light?
Hi There, Recently, I am working on simulating of Point spread function of high numerical aperture objective lens, according to the Richard and Wolf's mathematics representation, I can do the...
View ArticleHow go from Langevin to Hamilton
I have a system described by the Langevin equation da/dt = - dF/da* + r where a are complex amplitudes of electromagnetic modes (and r is the white noise). How if F was real, it would be the...
View ArticleRelation between electric field and SAR?
If you have an established relationship between the electric field and the specific absorption rate, is there an approximate shorthand for determining how the SAR changes with the electric field. For...
View ArticlePressure Loss owing to multiple nozzles
The following is the advancement of what I discussed in the link http://www.physicsforums.com/showthr...66#post4274966 Problem Statement To calculate Pump Discharge Pressure, Calculate the wattage for...
View ArticleLimitations of temperature in a large body of water
In a river, water flows so how does it resist freezing? Or does it freeze at the same rate just that at the point where the cooling agent is at, the water keeps getting replaced. So the average kinetic...
View ArticleSHM (transverse waves)
So, I have to self-teach myself part of my class. However, there's one part of my book I can't understad at all. First, I would like to understand, why does a transverse motion has 3 variable, y,x, and...
View ArticleUpper limit to size of Air Supported Structure??
Hey yall! Im new here, and I'd like to ask a question I can't seem to get an answer to anywhere else, so why not get it here! I'll get right to it! The question is...What is the upper limit of an air...
View Articleentropy clausius
Hi,I m just beginner in physics,but actually I don need exact expression of physical laws in math language.I know,math is language of physics but still..... So,I m looking for answer to my questions...
View ArticleIs this a correct definition of one volt?
One volt is when: The difference in (electrical potential energy per unit charge (q)) between two places equals one. Where electrical potential energy equals EPE at distance R from charge Q =...
View ArticleWill free electrons experience its own electric/magnetic field?
Hi, everyone :) Recently I've read a paper and found in that paper that the authors derived the wavefunction of moving free electrons from its own electric and magnetic field. It was quite a shock to...
View ArticleIs it easier to break 1 2inch boards or 2 1inch boards
Hi I have been doing taewkon do and seen people break boards and I want to know is it easier to break say 1 2 inch thick pine board or 2 1inch pine boards assuming that the boards are uniform and have...
View ArticleDifference between momentum & KE. Please, help.
two days of searching and reading and still i can not comprehend these concepts. what i know: 1)momentum is vector and energy is scalar. Well it gives no intuition to me. 2)i know that Force x dTime is...
View ArticleSpecific heat capacity of Argon dependence on temperature
Hi boys and girls. I am looking for Specific heat capacity of Argon dependence on temperature but i cant seem to find it anywhere. Do you have some source where I could get it from?. I need it for...
View Articlesimple energy calculation help
Hi, I'm trying to calculate theoretical energy generated by a system and I'm not sure if I'm doing it right and if I understand the concept properly. Here is my thinking, any input is appreciated. 12...
View Articlecomplex valued magnetic field
I have a complex valued (magnetic) vector field. In order to find the actual magnitude, do I need to multiply by the complex conjugate? If I remember correctly, the direction is given only by the real...
View ArticleAbout wave polarisation
I have two queries: - if unpolarised light passes through a polaroid filter so that light coming out of the filter becomes polarised, would intensity (brightness) of the light become reduced as a...
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