Are the gas laws compeletely true?
I've looked alittle at the gas laws and I get the feeling that they are simplified. From what I can see they don't take intermolecular forces into account. Will the intermolecular forces simply...
View ArticleIs sound wave a transverse wave?
i had always belived that sound wave was a longitudinal wave till i come across something saying that its a transverse wave in solid.can anyone explain is it so??
View ArticleQuestion about canonical transformation
I was going through my professor's notes about Canonical transformations. He states that a canonical transformation from (q, p) to (Q, P) is one that if which the original coordinates obey Hamilton's...
View ArticleDoppler Effect and Reflection
Hello everyone, Here is something I've discussed with some colleagues recently and that generated a lot of disagreement, so I wanted to bring the topic to Physics Forums to ask what is your...
View ArticleCalculating Rotational Inertia (A Bit of Confusion)
Hey all, Perhaps this is a bit stupid... I'm familiar with the normal procedure of calculating rotational inertia (using integration, parallel axis theorem, etc.). However, I had a confusing thought:...
View ArticleQuestion about magnetic field gradients
I am trying to calculate the magnetic field gradient for an anti-Helmholtz configuration. All the equations I have seen simply relate the strength of the gradient to some rudimentary variables (coil...
View ArticleWhen do Maxwell's Equations Breakdown?
I'm trying to get a sense of how widely applicable Maxwell's equations really are. I've read that electrodynamics becomes non-linear in the Schwinger limit where electric field strengths get high...
View ArticleBattery and wire
There is a battery connected to a non ideal circular conductor wire. What is the specific mechanism by which one electron inside the wire “feel” the presence of the battery because of electric field?
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Rotational inertia
Hi, I would like to calculate the function of a rotating disc that has 2 spring slowing it down. (look at my pictures to understand) Let say I turn my disc 90 degrees clockwise and release it, it is...
View ArticleCan a Research Paper on Classical Physics make it to a good journal?
I am starting University in September, 2014. I have some knowledge already on classical mechanics as I took optional Applied Math courses (called Mechanics 1 and Mechanics 2) in my mathematics A-Level....
View ArticleHall Effect: No hall voltage in a Copper sample.
I have been carring out an experiment in which I have to measure the hall voltage in two samples given to me, which are Bismuth and Copper. The Hall voltage values of Bismuth come out as expected but...
View ArticlePleease explain uniformity of B in circular loop ?
Why is the magnetic flux density uniform at the center of the circular loop ?
View ArticleBirds In A Truck Riddle
I'm doing battle with someone in a debate and I need some help here as, perhaps, I'm not articulating my side well or he's just so stubborn that he doesn't want to learn the error of his ways. :) It's...
View ArticleForces acting on two parallel wires carrying current which producing B
I want to know how to calculate the force , I know the formula and such but its just that I'm not sure about the Length part , I mean if Wire1 is longer than Wire2 ,then should I take the common length...
View ArticleDerivation for black body radiation. What is the 2 bout?
$${\rho}({\lambda}) d{\lambda}=E({\lambda})*f({E(\lambda}))*D({\lambda})d{\lambda}$$ $${\rho}({\lambda}) d{\lambda}$$ is density of radiative energy, $$E({\lambda})= k_BT$$ is the energy of an atom...
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How do speakers produce sound?
The above diagram shows the analyzer of waveform taken from a song. I wanted to know in terms of acoustics how is it that the different frequencies are produced at the same time by the same source. I...
View ArticleNon-holonomic constraints in field theory
My question is the following: In field theory, if I have a constraint [tex] \chi(q_a, p_a, \partial_i q_a) [/tex] that depends on the generalised coordinates q_a, momenta p_a and spatial derivatives...
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Need help: Trying to find the mass of a tortoise shell using a lever
I have a tortoise shell sitting in two parts on my desk (the top and the bottom). I somehow got it in my head that it would be fun to use it as an enclosure for a robot, and I need to know its mass...
View ArticleCavendish Experiment
Oh.. Many questions revolving on my mind.. (1) what are the conditions or in which situation can we do cavendish experiment? (I mean there should be no air or no gravity?)
View ArticleProof of no net gravitational force on a particle inside uniform shell
In my book it is written that Newton's shell theorem can be used to show that a uniform shell of matter exerts no net gravitational force on a particle located inside it. How?
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