Liquid-Vapor Equilibrium and Vapor Pressure
I'm studying vapor pressure and I'm having trouble to understand some concepts. Vapor pressure depends only on the temperature of the liquid in question right? For example, if we have a container with...
View ArticleCalculating Trebuchet Mechanics
Can someone please explain to me how to calculate Trebuchet mechanics? I know it involves lever mechanics with torque, angular velocity and projectile motion but I just can't seem to put these things...
View ArticleElectric Potential of a Uniformly Charged Sphere
My book gives the electric potential of a uniformly charged sphere as [itex]\frac{1}{4\pi \epsilon_0}[/itex][itex]\frac{Qr^2}{r_0^3}[/itex]. I can't derive this forumula. What I get is...
View ArticleEquipartition theorem
show that [tex]< \frac{mv_{x}^{2}}{2}> \equiv s\int_{-\infty }^{\infty} \frac{mv_{x}^{2}}{2} \rho (v_{x}) dv_{x}=\frac{k_{B}T}{2}[/tex] im stuck
View Articleenergy flow in presence of electric and magnetic field
To mention, i am trying to understand the flow of electromagnetic energy from the roots and only have some basic knowledge. In case i need to refer to some material to get to the answer, kindly provide...
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Electrostatics, capacitor question
1. Probably a stupid question, but what are the +'s? Are they just representing the fact that there is a lack of electrons on that plate, or are those actually some positively charged particles that...
View ArticleDirection of friction in rolling.
Hi, Consider a ball rolling upward without slipping on an inclined plane. What is the direction of the force of static friction? Let me explain what confuses me. I know that the friction opposes the...
View ArticlePolarizations of plane waves propagating in anisotropic media
Hey guys! (I am not sure if I should post this thread in Physics or Mathematics) I have had some issues with developing expressions for the polarizations (material displacement) of waves propagating in...
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Adiabatic process derivation
Most of the book using PV=nRT for PV^gamma constant for adiabatic process. However, please refer attachment, proving using conservation of energy will also make sense? Attached Images pv gamma.jpg...
View ArticlePhoton as a wave packet
When electromagnetic waves of different frequencies interact, they give rise to secondary wave structures called envelopes in which individual waveforms form at the rear and die out at the front. These...
View ArticleConduction of Electric charge across gaseous ions
Hey guys. I was wondering about this experiment. I have chlorine ions, and wanted to remove the electron from the chlorine ion to make it back into a nascent chlorine atom. I thought of preparing a...
View ArticleDouble pendulums
Hello When I calculate the centripetal force in a double pendulum, in order to find the tension in the 2 ropes, should I take into consideration the combined velocities of the 2 bobs or just the...
View ArticleCan Visible Light Produce Heat When Absorbed?
"dark materials absorb more thermal energy than lighter colored materials" Initially I thought this statement was very straight forward and obvious.... then someone mentioned that visible light photons...
View ArticleWork to Move parallel capacitor Plates
Hi, in my book there are two capacitor plates distance x apart (they are kept connected to a constant voltage source). These plates are moved apart to distance 3x. In order to find the work done to...
View Articleequal-probability-principle
Hey Guys, I have got a question. English is not my first language. Is the "equal-probability-principle" the same as "the equal-a-priori-probability-postulate"? Do both names describe the same process?...
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Polygon Collision calculate velocity and angular velocity
Hello, I am trying to simulate collisions between polygons with opengl. The weight, velocity (as a 2d vector), the angular velocity and the collisionpoint of the colliding polygons are provided. How...
View ArticleCharging a Fluid
Hello friends, I am performing an experiment and need a charged fluid here are some questions I have, hopefully someone can help. Can I create a charged fluid by taking distilled water, then adding...
View ArticleEnergy of an electromagnetic wave
So I've seen this equation used to calculate the energy associated with an electromagnetic wave: E=hf E is energy, h is a constant, and f is frequency. Therefore, the energy is related to frequency...
View ArticleCapacitive Sensing
Hi All, I've been recently reading up on capacitive sensing. Specifically, the case where you have one sensor which is an electrode with a static electric field. When this electrode comes near a...
View ArticleVoltage drop across resistors
Hello, I am having conceptual difficulties trying to understand how voltage is dropped across a resistor. The whole idea of it is confusing to me, where does this voltage go? Could it be explained in...
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