Means Definition and 288 Threads

Homework Statement 1a) The strength of concrete depends to some extent on the method used for drying it. Two different drying methods were tested independently on specimens. The strength using each of the methods follow a normal distribution with mean μ_x and μ_y respectively and the same...

I've recently find out that is possible to describe tunneling effect by means of the instantons. Of course there are other methods to compute the transmission probability (WKB for example), but the real utility of this technique is that it can be applied in Quantum Field Theory (and also in...

Hey guys. I've started studying Physics at home, but only the theory side with a little mathematics. So i would like to try, if i can, to introduce a little calculus to my work. But the problem is i find calculus a mind boggle, i understand All the GCSE math that i did. Could someone explain to...

Time Dilation...what it means I am trying to get my head around some of the basics of relativity. dt' = ydt Where dt is the time between 2 events in frame S, and dt' is the time betwen the same events in frame S', that is moving witha constant velocity relative to S. What exactly...

Hmm. I'm quite confused with this: Does no resultant force means no external force? i.e. if there is an external force, there is a resultant force? Like say, sand falls onto a moving conveyor belt at the rate of 5.00 kg/s. The conveyor belt is supported by frictionless rollers and moves...

The following distinguishes TWO cases for large samples confidence interval for difference in means: http://www.geocities.com/asdfasdf23135/stat11.JPG where Sp^2 is the pooled estimate of the common variance, n1 is the sample size from the first population, n2 is the sample size from the...

Always be used in experiments... but when it appears in literature, most authors never tell the exact value of 1 ML (monolayer). So, what is the value, generally??

It is like equal sign with ^ on top.

Homework Statement The question is asking for us to compute compab Homework Equations The Attempt at a Solution Is it another notation for projection?

I am reading a paper that uses a quantum mechanical notation that I do not understand. I have found a webpage that explains it, but I do not understand the explanation either: http://chsfpc5.chem.ncsu.edu/~franzen/CH ... (let Y represent the Psi) Specifically, I understand what <Yn|A|Yn>...

Homework Statement So it's been a really long time since I've done any ode/linear algebra and would like some help with this problem. Derive the general solution of the given equation by using an appropriate change of variables 2\deltau/\deltat + 3\deltau/\deltax = 0 The thing that...

Hey guys, Just a question which has been puzzling me for some time. I am told that means of samples of a population can be normally distributed with mean of \mu and with standard deviation of \sigma/\sqrt{}n Can someone please explain to me how the standard deviation is derived or is it...

i got two groups of numbers "a" and "b" what is the meaning of a\b and b\a ??

Parity Conservation Means? Hello all, What is Mean By Parity Conservation?.Dont tell That When Parity Of L.H.S and R.H.S Become Equal.I want to Know the Concept Behind It.Please help Thanks

The concept of invariance of an object, property, etc... should always expresses with respect to something else: time-invariant means static. space-invariant means homogeneous. direction invariant means isotropic. "Something" can have just one of those types of invariance, all three of...

1. A grasshopper makes four jumps. THe siplacement vectors are (1) 27 cm, due west; (2) 23 cm, 35 degrees south of west; (3) 28 cm, 55 degrees south of east; and (4) 35 cm, 63 degrees north of east. Find the magnitude and direction of the resultant displacement. Express the direction with...

During my college years I have become accustomed to a diet of wings, burgers, subs, Philly cheese steak, Chinese food, and Taco Bell ( note the distinction from authentic Mexican cuisine ). With the exception of the latter, the prices of these items have gone up especially wings and burgers...

Homework Statement Dx(7x+2-3x5) Homework Equations CNXN-1? The Attempt at a Solution Basically, I am in Physics C and this is our first homework assignment dealing with calculus/derivatives. I was able to do some of them, but I have no idea how to do this one, mainly because I don't know...

1. Please see attachment for Question I've put it into microsoft eqn editor. 2. I have not got a clue where to begin i don't want anyone to do it for me but some information on how i can do it for myself would be appreciated. 3. as above

To listen means you have to "acknowlege" or "agree" with what is being said, no? Do you think in the vast majority of cases that those who listen agree with what is being said, acknowledge it and move on? Or, do you think that those who do not listen well disagree a lot with what is being said?

Is it possible with javascript to take one article from blog A, one article from blog B, one article from blog C, and show them all together in one big table, with one article per table cell? Even better, is it possible to mix blogs as above but without duplicating content on an intermediate...

By prohibiting slavery, humans have accepted the concept that some things should not be owned. Has this limitation on ownership ever been applied to the means of production in a society? I mean complete prohibition of ownership, not shared ownership or ownership by some governing body, but the...

discrete spacetime means discrete momentum ?? the question is using De Broglie's Wavelength \lambda = h|p|^{-1} then in case space is discrete would mean that there is a minimum possible wavelength in nature , for example \lambda = k l_{p} for Planck's length this would mean that the...

Homework Statement Show any operator Q that commutes with the Hamiltonian, [Q,H] = 0, is conserved in the above sense (d/dt〈Ψ|QΨ〉 = 0). The solution to this problem is as follows: iħd/dt〈Ψ|QΨ〉 = (iħd/dt〈Ψ|)|QΨ〉 + 〈Ψ|(|Qiħd/dtΨ〉 = –〈HΨ|QΨ〉 + 〈Ψ|QHΨ〉 = 〈Ψ|[QH]Ψ〉 = 0. What I am confused about...

I have heard that bittorrent does a very good job of finding the sources of a file and downloading efficiently. So if enough people have a copy of a video and share it, performance might even exceed the mighty google. We'd all be broadcasters. There are some other, low-level routing...

do you understand what "linearization" means? Homework Statement Linearization 4x'' + 3 cos(x-y)y'' +2 y^2 sin(x-y) +3g sin (x) = 0 Homework Equations initial condition x(0) = y(0) = 0 The Attempt at a Solution pls tell me the relevant steps to solve this problem.thanx

What does the term "Action" means in physics? What does the term "Action" means in physics?

Could someone please define what the word spirit means. Everyone uses it like loose change falling off of their tongue, but what does it buy?

Hi everyone! So I'm trying to learn more about inequalities and the one I'm starting with is the power means inequality. But it all seems pretty intuitive except how they define the n=0 power mean (i.e. the geometric mean). I read that it's actually the limit as n->0, but I don't see why that's...

Ok, I'm computer literate up to a certain limit... I was looking over the new features of os 10.5 on their website. I have no idea what UNIX is and if it goes well with tomato sauce, but it sounds important. http://www.apple.com/ca/macosx/features/300.html what does this all mean in...

The problem with coursework is that coursework is structured in such a way as to "measure" knowledge at the end of the course. It provides no means of measuring knowledge months after the course, when one may have absorbed the course material better (especially since learning is best done over a...

My difficultly is in trying to visualize what chirality physically means. In solid state system, people usually ascribed electron of one chirality to be electron in the conduction band while the opposite chirality belongs to an unoccupied state (hole) in the valence band. Can I then say the...

http://www.cco.caltech.edu/~phys1/java/phys1/MovingCharge/MovingCharge.html "As time goes on, the line becomes more and more perpendicular, the horizontal component increasing faster than the vertical component" Which is that horizontal and which vertical component? Please help me. Thank you.

what does "band gap bowing" means? Hi, i speak spanish, and I've tried to translate the term "band gap bowing", but literally it doesn't have any sense. So, can anyone explain this term to me so i can translate it correctly?? Thanks a lot.

It's sort of a conceptual question: one of the assumptions for 2-sample t confidence interval is equality of variances in two populations, and I need to come up with a concrete example of when this is likely to fail. I sort of have an idea that it really depends how one chooses samples. For...

Isothermal means constant temperture process. But thermal means heat. Presumably iso is short for isolated. So it should be isolated heat process or constant heat process rather than constant temperture process. Instead adiabatic means constant heat process. Even though it is a trivial matter, I...

I know a bit about the degree, though the name itself "Doctor of Philosophy" seems awkward for some areas. I'm finishing up my master's right now; I'm considering getting a pHD because I think there's a chance for me to develop and idea I have that is "pHD" worthy. As well, I have an...

Homework Statement A football player runs the pattern given in the drawing by the three displacement vectors A, B, and C. The magnitudes of these vectors are A = 5 m, B = 14.0 m, and C = 23.0 m. Using the component method, find the magnitude and direction of the resultant vector A + B + C...

(a) int*p[3][3] (b) int*(*p())[10]; (a) points to address of data in the row 3, column 3? (b) can you advise me? thanks?

Kodama means "echo" or "spirit of the trees" I just thought you might like to know :smile: AFAIK the Kodama state was first written in 1988 by Hideo Kodama It seems the Japanese have what they call "clans" and there is a Kodama clan. There have been other famous Kodamas besides Hideo...

Does anybody know what the expression CIVIL means when dealing with reactance, capacitors etc? Thanks S Browitt

If G is a group and x, y are in G. Show that o(x) = o(y^-1xy), where o(x) means order of x. thanks

Hey Recently I have been given multiple problems to solve by means of integration. There are some problems which I am unsure on how to go about solving, or just don’t know. All help is greatly appreciated. _______________________________ Find the indefinite integral of \int {xe^{x^2 } }...

Many Physics books state that mass is the quantity of matter. What does the "matter" refer to? Objects contain the same number of particles could still have different masses. Could anyone help me? Thanks.

In Calculas I've learned that 'F means the integral of a function. SO what does ''F mean, th integral or an integral of a function?

1st of all I hope someone kindely explain to me what flity means? Then I want to know how you feel about these people?(Don't worry! I'm not starting thread on what I even don't know what it means! I just want to know the exact meaning):smile:

/tmp/ccUahLBZ.o:(.eh_frame+0x11): undefined reference to `__gxx_personality_v0' collect2: ld returned 1 exit status ?? Thank you,

My maths teacher taught me that vector cannot divide vector but the physics states that F and A are vectors so m=F/A, what m means?:confused: are there any differences about maths vector and phy vectors?:smile:

"Unable to start the application--the class file could not be loaded Catastrophic failure" It did this when I was using my CD to reload a toolbox that was corrupt. So I uninstalled the previous version, and even did so using a third party program that gets rid of EVERYTHING, then tried...

This is so wrong. :devil: "March 30, 2006 — When Ali Hellberg, 19, was in prep school, she said several of her classmates obtained notes from psychologists diagnosing them with learning disabilities, even though they didn't have any learning problems. They faked learning disabilities to...