Application Definition and 945 Threads

I don't quite understand how the modified goodman equation can be applied to a multiaxial stress state. The explanation given in my stress analysis class has been quite confusing and verbose so I've come here to see if I can't get a better understanding. First I'll lay out what I think to...

Hi. I was doing my Undergraduate Application for Current Ontario Secondary School Students (OUCA). I did Engineering Science (Physics) at UofT. But of UofT's Undergraduate physics at St.George, should it be part of "SG:Physical and Mathematical Sciences" and then Subject of Major Interest is...

[Two circular holes, one larger than the other, are cut in the side of a large water tank whose top is open to the atmosphere. Hole 1 is the larger hole, and hole 2 is the smaller hole. The center of one of these holes is located 6.61 times as far beneath the surface of the water as the other...

I'm having trouble understanding this post: https://www.physicsforums.com/showthread.php?t=81157 Specifically, part (a) (1) \frac{dV}{dt} = k - \alpha \pi \left( \frac{3a}{\pi h} \right) ^{2/3} V ^{2/3} Leaving out k, and considering a cone with no water coming in: (2)...

The ohm law for electricity is given by R = V/I Yesterday, my friend just took an experiment report to me which show the relation between R, V and I on a resistor and semiconductor separately. I saw that for resistor, R is almost a constant so V vs I is a straight line. However, for...

I've been slowly self studying Lagrangian topics, and have gotten to Noether's theorem. I've tried application of a Lorentz boost to all the terms in the Lorentz force Lagrangian (which is invariant with respect to boost since it has only four vector dot products). Then using Noether's...

Homework Statement One mole of an ideal gas does 3000 J work on its surroundings as it expands isothermally to a final pressure of 1 atm and volume 25 L. Determine a) initial volume and b) Temp of gas Homework Equations The Attempt at a Solution Well, its isothermal, so Temp is...

I've published my app... installed it... now I want to open the database the application uses. Is this possible? I'm so lost... please help!

Hi, I'm sorry if this has been discussed at great length before here (I did do a search before hand for Statement of Purpose but didn't find too much, forgive me if I've missed a thread). I'm from the UK and about to start putting my applications to US gradschools, from what I've gleaned...

Homework Statement Consider a linear chain of N atoms. Each atom can be in 3 states (A,B,C) but an atom is state A cannot be next to an atom in state C. Find the entropy per atom as N approaches infinity. Accomplish this by defining the 3-vector \vec{v}^{j} to be the number of allowed...

Homework Statement ∫dθ/(1 + (sinθ)^2 ), [0, π] Homework Equations Cauchy's Formula, perhaps Cauchy's Thm. http://mathworld.wolfram.com/CauchyIntegralFormula.html http://mathworld.wolfram.com/CauchyIntegralTheorem.html The Attempt at a Solution I first substituted sinθ =...

I am having some problems figuring out how to design a student traffic flow system for students entering and leaving a hall. I have to solve the equation and discuss the solution. I can solve the one for a road junction and traffic patterns but I'm sort of puzzled when it comes to the hall...

page.130 Ex.20 Ex.20 Show that if A and B are sets, then (A\capB) \bigcup (A\capB) = A. how do u solve this? The Attempt at a Solution

1. The period of the Earth's orbit is approximately 365.25 days. Use this fact and Kepler's Third Law to find the length of the major (not semi-major) axis of the Earth's orbit. You will need the mass of the sun, M = 1.99x10^30 kg, and the gravitational constant, G = 6.67x10^-11 Nm^2/kg^2...

Homework Statement A man 6 feet tall walks as a rate of 5 feet per second away from a light that is 15 feet above the ground. When he is 10 feet from the base of the light, a) At what rate is the tip of his shadow moving? b) At what rate is the length of his shadow changing? Homework...

I am electro-statically trapping particles for chemical and physical studies. I do not want to discuss the details of my research. AC Calibrators are very expensive and I don't need the precision. I did find a power amplifier that could step up my sine wave generator to the values I want...

A hemisphere bowl of radius 12cm is initially full of water. Water runs out of a small hole at the bottom of the bowl at a rate of 48pi cm^3 s^-1. When the depth of the water is x cm , show that the depth is decreasing at a rate of 48/[x(24-x)] cm s^-1 Also, find the rate at which the depth is...

Just a question on interpretation of lagrangian equations. If I have derived the equations of motion for a system and the equations are in terms of position of x and acceleration of x, am i able to find the acceleration of the system (acceleration of x) if I have a value for the position (x)?

hi there! I'm having some troubles regarding this question: "if a force of 5 pounds produces a stretch of 1/10 of the natural length, L , of the spring, how much work is done in stretching the spring to double its natural length?" i tried answering this but I'm not sure if my answer is...

Homework Statement Aristotle believed that the time it takes for an object to fall a given distance is inversely proportional to its weight. Given objects A,B,C and D with weights of 10,40,20 and 30 grams, which one would have the heights terminal velocity if dropped from the same height...

Hi everyone. I'm a brazilian mathmatician that didn't studied complex analysis. I study finance and now I'm needing to study that. In a paper of Lewis (2001) I found an expression that I couldn't understand. Does anyone can help me with that? They say they use the Residue theorem but I...

Dear, I want to make a project to switch-n a device on day-date-time basis i.e. I want to lighup a lamp on 30/08/2008 at 02:00PM .Is it possible to make a circuit for this by using PIC microcontroller.I want to use it in my company for rotational under frequency relay which trips off the...

I'm trying to get some software working to automatically download podcasts to my girlfriend's PC. The problem is that the window for setting options is too big, so not all of it is accessible. In particular, the "OK" button is off the screen, so I can't save the options. D'oh! I've been...

halo i've 1 project for my thesis. its about polymer dispersion in the protective application... i've 2 option of material 1. PMMA+ PEG 2. CATALLOID SILICA + PEG u guys thinks which one is better... i need some opinions from u guys... anyway i from malaysia

I am specifically interested in using bleach to kill the plantars wart virus (Verruca plantaris), part of the HPV family. It is a DNA virus. I know bleach will destroy DNA but I'm looking to minimize the concentration used to save money and prevent exposure to concentrated bleach fumes. "Full...

I'm starting my undergrad in electrical engineering at McGill University this fall, and while I know that it's still years ahead of me, I want to know how I can best secure my chances into whatever grad school I want down the road. I plan on doing their honours EE course, as well as a minor...

Hi, this being my first post and all I guess I should explain who I am. I'm Dave, I study physics at the University of Bristol in England and will graduate in the summer of 09 with a Bsc. I want to apply to Southern Californian graduate schools for admission in the Fall of 09 and I am...

Do all Phd students in the USA get paid to cover for living expenses? What are the latest dates for applications for Phd in the US each year?

So for a project I am asked to give examples of how cameras are used. Of course the obvious use is clear, but how else (hopefully physics involved ways) are cameras used? Forgot to mention, my project is on photographic not digital cameras.

Homework Statement Two forces act on an object at an angle of 50°. One force is 150 N. The resultant force is 200 N. Find the second force and the angle that it makes with the resultant.Homework Equations Ux=|U|cos(theta) Uy=|U|sin(theta) The Attempt at a Solution Basically I began by...

CAn some body tell me some physical applications of the "residuum theorem" and the "isolated singular point"

Give one practical application of quantum mechanics and write about it in 4 to 5 sentences.

[SOLVED] Puzzled by this application of L'Hospital's rule Homework Statement In an example in my textbook, they define a function f on the real line by f(0)=0 and f(x)=exp(-1/x^2) otherwise. They then say that we can evaluate f'(0) by L'Hospital's rule, and they write...

Before I go too indepth, I wanted to make sure this was the proper place to post this. I stated in my intro I am doing a co-op work experience. I am working at a sawmill, and I have been asked to look at a few situations and things like that around the mill. I have been here for a couple weeks...

i want application on fuzzy logic, from internet easy to understand

Hello! I was wondering if someone can tell me about any application to change of basis... The application can be of any sort, though. Thanks!

Does anyone know any tricks of the trade for painting Aluminum and Steel parts with a sem-gloss paint?

So what is an excellent Q&M text that is geared for application. The level of this text I would expect to be suitable for junior year or higher. Also, what about a mechanics book of this level?

[SOLVED] hand rule application (dir of mag force) Homework Statement You witness an experiment with a wire (a part of a circuit) and a horseshoe magnet. It begins with a wire laying on a table and passing through the mag field of the horseshoe magnet, but with no current passing through the...

I was wondering about a good application to plot the path of a particle in a magnetic bottle (i.e. the magnetic field in the region between two coaxial circular loops of wire) I was thinking that maybe I could use Biot Savert's (sp.) law d\textbf{B} = \frac{\mu_0}{4\pi} \frac{Id\textbf{l}...

what is the application of a frequency comparator in speed monitoring systems/ speed radar? pls let me know the detailed circuitry of the same and its implementaion. also what is the basic block diagram of a speed monitoring system based on comparision of pulses?

given a real function 'f' so the Fourier transform of f(x) exists and assuming Riemann Hypothesis is true so all the non-trivial zeros of Riemann Zeta are of the form 1/2+it then the Riemann-Weyl formula \sum _{t} f(t) = f(i/2)+f(-i/2)+2g(0)\pi- (2\pi)^{-1} \int_{-\infty}^{\infty}dr f(r)...

i've read that quantum field theory can be applied to condensed matter physics but i don't understand how: quantum field theory is the union of SR with QM but how is SR related to condensed matter physics? i understand that quantum field theory would be useful because it can describe...

Today, I completed a lab test in my physics test, and received the highest grade in the class. The goal was to simulate a bungee jump. We had to make the payload, an egg in my case, get as close to the floor as possible without touching. To do this, you get a rubber band, and would then...

http://www.zefrank.com/dtoy_vs_byokal/index.html

which of the following colours would you expect to see near the bottom of a soap bubble, red or blue?...i think red is... because it has longer wavelength?

you find two unlabelled diffraction gratings in your lab. from purchase records, you know that one grating has 500lines/cm, while the other has 10000lines/cm Given the following equipement, describe how you would determine which is the grating with 10 000lines/cm: red laser, detection screen...

Hi, I've recently written a small program to calculate multiplicative group tables for Z mod n. I wrote it in java, as that's the only programming language I currently know. import java.util.*; public class ZnX { public static int gcd(int a, int b) {...

I need some credible opinions. I recently applied to a masters program in mathematics at a public university. This is not a reach school at all. I was told that since I was from a non-math background, I had to take abstract algebra and the baby Rudin class. I planned to take those anyway...

It would seem so Homework Statement If \sum\limits_{n = 1}^{\inf } {|{f(n,x)}|} is uniformly convergent on [a,b], then is \sum\limits_{n = 1}^{\inf } {{f(n,x)}} uniformly convergent. Homework Equations The Attempt at a Solution I said yes. And just applied the...