Color of central circle in Newton's rings
Hello guys , Can someone explain me why color of central circle in transmission case is bright whereas it is dark for the reflection case? Thanks a lot,
View ArticleAmpere's law for a point charge
I'm having some trouble confirming Ampere's law for a moving point charge. Let's say we have a point charge [itex]q[/itex] moving with velocity [itex]\mathbf{v}[/itex]. The magnetic field it creates is...
View ArticleSurface Tension - Lung Alveoli
So, the way I understand this is as follows : The alveoli (pretend they're bubbles) have diameters of the order of microns implying a massive pressure required to inflate them by the Young-Laplace...
View ArticleIs there a way to calculate thermal conduction speed or time?
Hello. I'm working in the plasma physics and trying to calculate the thermal conduction time or speed. Thanks to the people here replied my questions, I was able to calculate the thermal conductivity...
View ArticleSpecific Heat in Absolute vs Relative Units
I'm running a simulation on a gas mixture that spits out its Specific Heat in a number of different units. The values for Specific Heat in Btu/lbmolF vs Btu/lbmolR are the same, which confuses me at...
View ArticleThe multiple derivatives of position
Hi all, I came across the term placement, and presentment and the likes. I was wondering what they may mean in physics. I tried a search but the answers were not very clear. I was also wondering what...
View ArticleVoltage and current
In an eletric circuit, can exist nonzero voltage and zero current? Can exist zero voltage and nonzero current? What the voltage make (in the sense of task/function/operation) in the circuit? What the...
View ArticleWhich is the problem with eletric shock?
Which is the problem when a human being is electrocuted: the high voltage and/or the high current? What the high voltage make in the body human (such as brain, heart and other organs)? What the high...
View ArticleTurbocharger in a car, thermodynamics
For a car modification project, it would be nice to have a function to express the pressure in a volume, as a function of the size of this volume, the amount of air moved by a compressor per unit of...
View ArticleGenerator's constants
If in a typical complete circuit (RLC) we have a resistor with resistence R, an inductor with inductance L and a capacitor with capacitance C, so the generator has which constants? And in second place,...
View ArticleAbout the Kirchhoff's circuit laws
The Kirchhoff's circuit laws are what there are of better for compute the current and voltage in anywhere of a circuit? Or exist another theory more simple, more practice and more general?
View ArticleWhat is the equation to calculate thermal energy due to friction?
I have to calculate the amount of thermal energy due to friction, it will be rolling friction if that makes a difference but i would like to know how (if possible) to calculate thermal energy due to...
View ArticleDeviation of compass in another frame.
Consider an inertial frame where an electric current is flowing in upward direction, a magnetic field is created and its direction is determined by the right hand rule. In the frame of reference of the...
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Differential equation to describe beam width
I have two independent variables (rotation in degrees, and distance from best focus distance in mm) and one dependent variable (1/e^2 width squared in mm^2). How would I go about creating either a...
View ArticleQ give rise to D => E => V => I => H.
Charge is the most fundamental quantity. consider a point charge Q to simplify our mental picture: Q will give rise to a Immutable D, whatever material that Q was placed in. E will then = D/ε. Stronger...
View ArticleDual role of force acting on rigid body
Can the same force increase both the translational and rotational kinetic energy of a rigid body? If yes then the work done by the force equals the sum of the increase in the translational and...
View ArticleSurface of Water in a Rotating Bucket via Calc. of Variations
I am referring to "Newton's bucket" -- essentially a hollow cylinder filled with water inside which rotates about the cylinder's axis. The result is that the surface of the water is a parabola. The...
View ArticleForces in objects
I had a question that was on my mind for a while. The general question is about structures and a force on that object in a certain direction and how the entire structure is accelerated by this force....
View ArticleInterpretation for voltage and flux linkage
The interpretation for charge and current through of a circuit is known... "the current is the motion of the charges, electrons, that is repulsed by negative pole and attracted by positive pole through...
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