Equilibrium Points of a System given its Lagrangian
Given a system's Lagrangian, How can we calculate the equilibrium points corresponding to the system? also how can we determine if that's a stable equilibrium?
View ArticleCalculating entropy in many-body-simulation
Hi all, as already implied by the title, I'd like to compute the entropy of an ensemble of particles in a many-body-simulation of an ideal gas. At each time step I get new values for the position,...
View ArticleOhmic resistace
Where does ohmic resistance arise from, is it from the collision of the current with the electrons of the wire or is it from the electric field of the electrons of the wire's atoms that cause repulsion...
View ArticleTemperature field for a 2D plate with an elliptic inclusion
Hi so I am trying to find the analytic solution for the steady state temperature distribution of a 2D plate which has an elliptic inclusion. Both the plate and the inclusion have constant conductivity....
View ArticleHow electrons flow in a circuit?
I have pictured I model about how electrons move in a circuit, What happens first is that electrons are built up on both the cathode and anode but since both of them are made of different materials,...
View ArticleHooke's Law question
How come a spring with applied weight of 1000 g goes down 9.8 cm but the same spring with applied weight of 500g goes only 3.7 cm down? This is from my own lab that I preformed, and I need help in...
View ArticleDoes a wire in a closed circuit induce a voltage on itself?
According to Faraday's Law a changing magnetic field induces an electric field, an example of this is if you have a wire close enough to another wire with current flowing through it the first wire will...
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The Effect of Gravity on Photons
I am not well versed in complex physics (I've taken honors physics in High school) so any help I can get with simpler vocabulary would be appreciated. I stumbled upon this problem when just thinking...
View ArticleEpicyclic motion and precession
Imagine I am standing but not moving forward/backward, but I am rotating my body about my own axis. Now imagine if I moved in a circular path as I was spinning on my own axis. Is this considered to be...
View ArticlePoiseuillie's law
hey guys, can someone explain me Poiseuillie's law, because, I'm reading and reading and reading and don't understand ;(
View ArticlePoynting vector of the difference of two fields
Hello :smile: ! Let [itex]\mathbf{E}_1, \mathbf{H}_1[/itex] be an electromagnetic field due to certain sources [itex]\mathbf{J}, \mathbf{J}_m[/itex] and [itex]\mathbf{E}_2, \mathbf{H}_2[/itex] be...
View ArticleWhy is only half energy stored in an extended wire
This relates to the extension of a uniform cross-section, homogenous, ideal wire which extends within the proportional limit (Hooke's law). From my understanding, only half of the gravitational...
View ArticleHot air required for conveyor oven
Dear Engineers, My name is Humza Afaf and I have recently started a new business in Pakistan. Due to energy crisis in my country, I am unable to get a natural gas connection for my conveyorized oven. I...
View Article[Help] Calculating impact force
I am currently working on an experiment with piezoelectricity and was wondering how I would measure the force applied to the crystal. I have been tapping the crystal with a screw driver and was...
View ArticleUsing dark tiles to heat a pool via absorption of solar energy
Hi everyone--first post, thanks for any guidance if I've posted in the wrong place. I've got a simple idea and I'm curious if it's worthwhile doing. How effective would putting a dark surface (perhaps...
View ArticleInertia of two masses m2 connected to a rod.
I have never dealt with moment of inertia before, this is a physics lab i need to do some pre planning for which involves topics we have never covered and are expected to learn. I've been busy working...
View ArticleQuasi(Almost) Equilibrium(Static) Processes Real Life Processes
Hi, I am posting here for the first time, hence, should I have violated any forum rules I am sorry and kindly advise. I am a novice so please bear with me. Thank you. I read everywhere (in text books)...
View ArticleCar model from modeling wheels
Hi there, first, thank you for letting me posting here and hopefully helping me with this. I am trying to model how a car will move by modelling its wheels (I control them with motors). The problem...
View ArticleDerive conservation of center of mass position
Hello there, If a mass, m, is placed at one end of an boat of mass M, which is located on a frictionless ocean. If the mass, m, is moved from one end of the boat to the other end, conservation of...
View ArticleAngular Velocity
This is not schoolwork. Imagine that light did not have a constant speed, but behaved in the manner expected from experience. Namely, if the source of the light is rushing toward you, the light will...
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