Question w/ chemical potential, equivalence to Energy or Potential?
I have a quick question, is the chemical potential $$\mu=\partial F /\partial N$$ where F is the free energy physically equivalent to a potential or energy? For example, in electrostatics, $$V=U/q$$...
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Definition of "View Angle of Human Eye"?
I've been told (since high school I think) that "view angle" in a 2-dimensional plane is approximately (distance to the object/object's length). The assumption is that I'm viewing an object...
View Articlekinetic energy and momentum.
why is force equal to rate of change in momentum rather than rate of change in kinetic energy. If we consider time is 1 sec,and if we consider an object is moving with particular velocity V1 and a...
View ArticleCoupled oscillators analog to EIT - do I miss something?
Hi, The question seems trivial, but I want to check if I miss something. I'm trying to analyze this article : Classical Analog of Electromagnetically Induced Transparency...
View ArticleCar acceleration problem
Hello there, Just got an old car, and I was looking at the specifications, and trying to teach myself Newtonian physics. But I cannot get it to work out correctly. Please tell me where I go wrong. The...
View ArticleBound Charges - Polarized Distributions
The potential due to a polorized distribution is given by: [tex]V( \vec{r}) = \frac{1}{4 \pi \epsilon _{0}} \int _{V} \frac{ \hat{r} \cdot \vec{P} ( \vec{r}')}{r^{2}} dV [/tex] After working some...
View ArticleSchwartz, Infra-Schwartz Locally Convex Space
I've been writing a paper based on Chapter 1 of the book Nuclear and Conuclear Spaces by H Hogbe-Nlend. Its about Schwartz and infra-Schwartz spaces. View my blog, http://greentea28a.wordpress.com/,...
View ArticleConsistency in finding electric field!
When considering electric field in a dielectric media,there are two forms of Gauss's law:[itex] \oint \vec{D}\cdot\vec{d \sigma}=q_f [/itex]and [itex] \epsilon_0 \oint \vec{E}\cdot\vec{d\sigma}=q_f+q_b...
View ArticleRelative Velocity - Mistake in Textbook?
I am just reading through this free online textbook and it seems to me that there is a mistake on page 24. http://www.anselm.edu/internet/physi...18.pdf#page=23 He describes the muzzle velocity, which...
View ArticleCan you speed up Earth's rotation by spinning?
Hey, Got into a discussion with my friends over this: If you spin in your chair clockwise, since the earth spins counterclockwise, as you start spinning by conservation of momentum the Earth would also...
View ArticleCavitation at/in Fast Water Stream
In this video at 7:15 you see a rifle fired underwater: Apparently even before the bullet leaves the barrel, you see a cavitation trace coming out. The author explains it with the water being pushed...
View ArticleCentrifugal Force on a stone tied to a thread
I am not sure I get the concept of centrifugal force.. If we have a stone tied to a thread and we just spin it in a circle, and while we are spinning it in a circle, the thread breaks and the stone...
View Articlehow a battery cell works?
i first formally learned about the cell in my chemistry class. their explanations for how it works was very unsatisfactory for me; so i wondered if this was rather a physics question. i have two half...
View ArticleMotorcycle cornering force on each tire?
Thanks to anyone who cares to read or respond. I've never taken a physics class so really all I have is "it seems to me". But I would like what seems to me to make sense. Scenario. I have a motorcycle,...
View ArticleTransition of Electric field and potential between media
I am interested in the main difference between transitions from electric fields from Conductive to Conductive/ Dielectric to Dielectric and Dielectric/Conductive media. What are the boundary conditions...
View ArticleGreens function and the conducting sphere
Can somebody explain to me, when equations 2.48 and 2.50 are applicable and what ##\Phi_s## and ##\Phi## actually are? The thing is, I want to find a general equations that determines the field...
View ArticleBasic question about the generalized Poisson Equation
Hi, Suppose we look at two dimensional Poisson's equation in a medium with spatially varying (but real) dielectric constant: [tex]\nabla(\epsilon_r\nabla \varphi) = -\frac{\rho(x,y)}{\epsilon_0}[/tex]...
View ArticleElectron vs. Photon's electrical potential
Hi guys, After reading a paper about electron scattering, I became very interested. So if an electron is travelling in empty space, the electron's potential (according to the paper) is supposedly:...
View ArticleError analysis/mechanics help appreciated
State and justify the techniques you would use to reduce the errors of the following. Each explanation should show a clear understanding of why the technique is relevant in the particular situation. 1....
View ArticleIs mixed light the same as interfered light?
Hey all! I'm building a simple low cost Fourier Transform Infrared Spectroscope as a summer project. for those unaware, the process involves a Michelson-style interferometer which takes a coherent...
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