Straw sucking height calculation
How high can one suck water up a straw ? Is this analysis and calculation correct ? ================ Straw sucking height limit calculation Sucking up thru a straw from a height ...limit h = ? m If the...
View ArticlePartial differential of U at constant temperature?
U is internal energy T is temperature v is volume U(T,v) My book say (∂u/∂v) at constant temperature can be calculated from the equation of state. How to calculate it? Thank you
View ArticleMixing water at different temperatures
Hello all, I'm having trouble solving the given problem. "Assuming that no heat is lost to the surrroundings, what will be the final temperature when 1 kg of water at 10°C is mixed with 5 kg of water...
View ArticleCircular double refraction
When a substance has coefficient of refraction that depends on direction, a single ray of unpolarized light incident on its surface normally splits in 2 rays - no fewer except in case of specific...
View ArticleEigenfunction of a Jones Vector (System)
I am trying to find out just how to solve for the eigenfunction given a system, namely the parameters of an optical system (say a polarizer) in the form of a 2 by 2 Jones Vector. I know how to derive...
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How to build a simple AC motor with Styrofoam
Hello everyone, For my physics class, I want to build an AC motor with styrofoam, magnets, screws and magnet wire. So far, I have built a cylinder of about 2.5" of radius and 1" in height with eight...
View ArticleConservation of Momentum Question
Hello, Here is the situation I have been pondering: A person is sitting in a shopping cart at rest. By throwing their weight forward they are able to cause the shopping cart with them inside to move....
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Comparing work done(Please help me mark my concept)
For both situation, the person oh the ship is pulling the rope with a particular constant magnitude of force, F for a fixed duration, t. Because the medium of force F is a light inextensible rope, so...
View ArticleSpeed of someone sitting in a car
I was just doing a thought experiment.. So when you are sitting in a car that is moving, your speed relative to yourself inside the car is zero, but to someone outside watching you, you are moving....
View ArticleMaxwell speed distribution
I want to know if the Maxwell speed distribution is the following. An ideal gas system of n particles, say constrained to the unit box, has the phase space ([0,1]^3 x R^3)^n. That is, [0,1]^3 for the...
View ArticleFraunhofer diffraction
In single slit fraunhofer diffraction, only the light which goes near the slit is diffracted... If it goes just through the middle it will not be... If the slit is really small would light be...
View ArticleAlpha Particles in Closed Box
Ok, so I am currently building a cloud chamber for a major presentation in the area of Thermodynamics (or Energy and Temperature) and i've been thinking quite a bit about this theory....and i could be...
View ArticleWorking out the speed of short wavelength, high amplitude, deepish waves.
I'm trying to work out the speed of a water wave which has a height of ~1/3 of the wavelength and a depth of about half the wavelength and I can't find which equation I need to use. How should I go...
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Snell's Law - complex angle of refraction (need "complement")
I'm tying myself in knots trying to calculate something I think should be very simple. I'm writing/debugging some code at the moment, and I simply don't know if this silly problem is the source of the...
View ArticleUtter confusion regarding distance covered during acceleration in free fall.
Let there be an obj. which is made to fall from a certain height in a gravitaitonal field. where a= 10 metre per second squared Say it falls for 1 second. v(final velocity)= 10 metre per second. How...
View ArticleBehaviour of Gyro in space compared to on Earth / in gravity
My question is about a toy gyroscope free floating in space far away from any gravitational field. I want to know why it does not precess in response to external force? On earth the torque on a...
View ArticleFiber Optic Cable Capacity
I am trying to design a system that will carry light for illumination along a fiber optic cable. I see that there are many thicknesses of fiber optic cable - however I am unsure of the purpose of this....
View ArticleDielectric slab orientation
Given the following statement: "A plane wave is incident (from the free space) upon a semi-infinite medium made of N=100 different lossless dielectric slabs." Visually/spatially, what does this look...
View Articlequestion on electric lines and conductor
i have read that if we place an unit positive electric charge in an electric field the path in which it moves is the electric lines of force of that electric field . is it true ? and again that the...
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