Function for a bullet's path
I've been mulling this over all weekend, and I've decided to get some help on this. The problem is writing a function to describe a bullet's path. I've asked two people about it my Physics teacher (who...
View ArticleModeling Rigid Body - Unsure about Euler angles and angular velocity
I'm modeling a single 3D rigid body in preparation for some more complicated modeling in order to gain a better understanding of Euler angles, the angular velocity vector and the rotating coordinate...
View ArticleAngular Frequency of AC voltage
Hello, I am wondering, what is the physical interpretation of the angular frequency of AC voltage? I don't see the physicality of what the angle for which there is a frequency? I understand that the...
View ArticleCurrent leading voltage or vice versa concept
Hello, I was wondering if there is a conceptual explanation for when current leads voltage or vice versa for capacitors or inductors with AC voltages, or is it just the way the math pans out?
View ArticleAssumptions of Griffith's fracture theory
Any experts on Griffith's fracture theory? I am studying the subject and I am having hard time finding out if the theory is valid for all possible initial crack lengths. I have heard from pretty...
View ArticleBubbles in a Pre-Boiling/Boiling pot of water
How is it that bubbles form on the bottom of a surface of a pot of boiling water? I think that there is probably an elementary answer to this from chemistry. But I am thinking of something more along...
View ArticleDipole term in multipole expansion
Hi. I'm having some difficult in understanding something about the dipole term in a multipole expansion. Griffiths writes the expansion as a sum of terms in Legendre polynomials, so the dipole term in...
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Rotating electron as a dipole is this right?
An electron as shown by the Stern Gerlach experiment behaves like a dipole (albeit only in one of two states). I have been trying to figure out how this is so and drew up the following sketches. A few...
View ArticleThe Durability of Bone: Long Falls
I am doing a paper on the physics in Valve's Portal and got interested in the "Long Fall Boots" that prevent any damage no matter how far you fall. I can calculate the force they can withstand and all...
View ArticleSpecific Exergy vs Specific Flow Exergy
I'm having some difficulty understanding exactly what the difference between the definitions of these values are. As I understand it, in terms of solving given problems, you have to use the equation...
View ArticleFaraday's law on circular wire
In my examples on Faraday's law in my book, they use a drawing of a magnet approaching a circular wire. The changing magnetic flux then induces an emf on the circle of wire, which in turn causes a...
View ArticleRay tracing throught optical system of thick lenses
Can you advise me a free software that allow to draw rays passed throught system of thick lenses (preferable in 3D)?
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Image of a Convex Lens Cut in Half Horizontally
Hello everyone, A friend of mine came up with this question in class and I really do not have a good answer. Suppose you have a convex lens that has been cut in half horizontally and the top half...
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what is the distance traveled
A rough sketch of experiment. the red dots represent a side view of path traveled, F is downward force and the tool used here is a pen placing parallel to the coin Hi. I have newly started to study...
View ArticleDifferences of Classical Mechanics when learned with Calc vs algebra?
what are the differences? Every example I find usually has a derivative or integral or some kind of calculus defined concept that seems to make it easier or more understandable
View Articlelatitude & longitude & air pressure
Hi there, I have a peculiar question. Imagine that you are in a earth position, obtained by google, that gives you the latitude and longitude. Those values are given in the decimal notation (ex:...
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Calculating on-axis elements of a solenoid
I wanted to mention that this solenoid has many winds over many layers. The thickness of the windings is 2.4 inches coming off of the engineering schematics, and has many many many turns, which is...
View Articlegravity is std. therefore can we rate a 'mass at height' by watts?
For example.... wind turbines are primarily listed by their wattage (1.5MW etc.) Presumably their output is varied according to rotational speed, so I'm guessing that the rating is simply a guide....
View ArticleNormal force for a lever model
My model is a lever on a table top. One arm is horizontal on the table, while the other arm is raised at an angle alpha. I'm assuming the weight of the horizontal lever (F) acts at its center of...
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