Green Definition and 306 Threads

A novice golfer on the green takes three strokes to sink the ball. The successive displacements are 4.00 m to the north, 2.00 m northeast, and 1.00 m at 30.0 degrees west of south. Starting at the same initial point, an expert golfer could make the hole in what single displacement? I drew...

I bought this stand up scooter for $850. It's made by a company called http://goped.com" . It can go upto 20mph and I weigh 142lbs. But the problem is, as with all electric scooters is they get low range. Mine get's about 10 miles and it runs on stock SLA batteries packs. Picture...

Heads up . . . I have not formally studied quantum physics, but I do read about it and watch videos by some of the greats. I understand the conflict between the "micro" and "macro" physics, but I do no understand most of the details of quantum physics. Now, Tom Green enters the picture. He...

Those familiar with Alex Stef's page with the list of online lecture notes on mathematics and related topics may want to update their bookmarks. This is new site: http://users.ictp.it/~stefanov/mylist.html Those who are coming across this site for the first time may want to bookmark it...

Let be the 1-D Hamiltonian: \hat H = -\hat D ^{2} + V(\hat x) (1) and its associated 'Green function' so: -D^{2} G(x,s)+V(x)G(x,s)=\delta (x-s) (2) then my question is if there is a relationship between: Tr[exp(-a\hat H ) ] and Det[1-aG] (3) where a >0 and 'G' is the...

This is the dreaded final round. It will be a difficult one. Good luck to everyone! Please vote for the picture that best represents our theme: the color GREEN. 1. SpaceTiger http://www.astroskwurl.net/PF/Green.jpg 2. Janus...

This is the 2nd group in this contest. Please vote for the photo that best represents our theme for this week, which is the color GREEN. 1. Moonbear http://img59.imageshack.us/img59/3446/greenhi9.jpg 2. Integral http://home.comcast.net/~Integral50/Photo_contest/HPIM1001a.JPG 3...

This is certainly going to be another difficult contest to vote on, even for the first round. You have one vote to cast in each group. Please vote for the picture that best represents our theme, which is the color GREEN. 1. SpaceTiger http://www.astroskwurl.net/PF/Green.jpg 2...

Green With Envy Just in time for St. Patrick's Day this weekend, our theme for this week will be the color GREEN. Your picture must have the color green as the dominant color in the picture. Good luck of the Irish. Contest Rules: 1. Any digital photo or digitally-scanned photo...

Question 1) Integrate y^2 dx + zx dy + dz, along the circle x^2 + y^2 – 2y = 0 to (1, 1, 0) I am not sure how to begin on this problem. Would it be beneficial to convert to polar coordinates? The thing that is throwing me off is the fact that the circle’s equation is not the normal circle...

Hey, I am trying to find a GF for the function: y''+\frac{1}{24}y=f(x) The function is bounded by: y(0)=y(\pi)=0 I have followed a math textbook that goes through the exact process for the function: y''+k^2y=f(x) and have found a nice looking general solution...

Homework Statement Hey folks, I need to find a Green function for the equation: y'' +1/4y = f(x) With boundary conditions y(0)=y(pi) = 0 The Attempt at a Solution I tried some combination of solutions that look like sin(kx) and sin(k-pi) and looked at the strum liouville...

I saw a bright green meteor yesterday. What would cause a meteor to be bright green? Is this common?

Photosynthesis occurs in all plant life and is responsible for making them green. Why are not all plant life green. I.e. flowers can be yellow, red and some leaves too like the leaves of Poinsettia. Is the reason because no photosynthesis goes on in them? Or is something else more dominant...

http://www.detnews.com/apps/pbcs.dll/article?AID=/20061129/UPDATE/611290443

What're the condition for a "green function to exist? That's my question,let's suppose i define the functions: G(x,s)=exp(x-s)^{2} and R(x,s)=(e^{st}-1)^{-1} My question is, could G and R satisfy the condition (for a linear operator L) LG(x,s)=\delta (x-s) ?. My interest lies...

Hi, I have a basic ODE: y''(x)+\frac{1}{4}y'(x)=f(x) on 0<x<L With Boundary conditions: y(0)=y(L)=0 For which I would like to construct a Green Function. Rather than just plain ask for help, I'll show you what I've been thinking and maybe someone wiser can help/correct me...

I am demonstrating the mean value theorem, which says that for charge-free space the value of the electrostatic potential at any point is equal to the average of the potential over the surface of any sphere centered on that point. I have already found one way to do this, but would also like to...

I don't have a clue on where to start this as i don't know what other figures to use. Dry air will break down and generate a spark if the electric field exceeds 3x106N/C. How much charge could be packed onto a green pea (diameter 0.75cm) before the pea spontaneously discharges?

How do I treat a goldfish pond green with algae? Visibility is ~2 inches. It's not the wall coating I'm concerned about, it's the water itself. I know how I'd treat it indoors - with a scraper and a water change, but that won't work in a pond. (Well, I suppose a water change would help...)...

I need a list of Green functions, for different types of equations and dimensions. I have tried to use google but with no success.

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"[URL http://www.davesbrain.ca/aura/index.php I am so pleased. My greatest PHP app yet! Exceeded 4 kilo-users! Your "aura" is your personality type, determined by a questionnaire (think Meyers-Briggs test). Loads of info about what type of person you are.

Are there any fields of physics that one can go into after getting a masters or a phd that merge together experimental or theoretical physics and directly tackling environmental problems. The only thing I could think of is fusion research, which could eventually lead to cleaner energy. More...

A few months back there was a thread with a pic of a visible beam being emitted by a green laser pointer. There was some discussion as to whether or not it was a photochop. Here is a pic I took of "my" green beam laser. I am not at liberty to say a lot about this laser, but it is 1064nm and on...

hey so I'm having a lot of trouble on this section of physics. the question I'm on is: Green light (546nm) strikes a single slit at normal incidence. what width slit will produce a central maximum that is 2.3 cm wide on a screen 1.42m from the slit? I've been trying to manipulate...

Hi everyone. I'm doing a pre-lab for AP chem class. I forgot to check for specific data I need in the Merck. I was wondering whether anyone out there has the molar mass value and pKa of the indicator bromcresol green. Any help would be great. Thanks in advance.

Does anyone use the green envelopes at the left of threads to make decisions about what to open? I never do, and often forget they're there. When I happen to notice them I have to go to the bottom and refresh my memory of what each means.

Dear PF, Could you tell me what is Green function for bilocal operators? As I understand from its form G(x1y1, x2y2,...)... now the pairs of XY are considered as points instead of single X points as in normal Green function G(x1,x2,x3...). So What do we need it for? Or can it be decomposed...

I know you guys aren't exactly biologist but,what does it mean if you get off the toilet and you see green stool?

The sky is blue because the white light is diffused by the light particles, which scatter out the blue end of the spectrum, hense a blue sky. In the afternoon, it is often red or orange, because the light has to travel much longer through the atmosphere, scattering out the red end of the...

What is the advantage of using Green Functions to solve inhomog. ODE's?

At the instant the traffic light turns green, an automobile starts with a constant acceleration a_{x} of 6.0 \frac{ft}{sec^{2}} . At the same instant, a truck traveling with a constant speed of 30 \frac{ft}{sec} , overtakes and passes the automobile. (a) How far beyond the starting point...

i've heard that if you leave green tea out overnight, it'll become poisonious. is that true?

has science found any documented proof that drinking green tea every day has health benefits for you? If so what are they? ~Kitty

Suppose r red balls and g green balls are mapped randomly among b bins. Calculate the expected number of bins where red balls are in majority. My attempt, Let x_ijk = 1 (when kth bin contains i red balls and j green balls) = 0 otherwise Then, F = \sum_{k=1}^{b} \sum_{i=1}^{r}...

i would like to find an operator G(x,s)=G(s,x) so LGx,s)=H(x-s) with H(x) Heaviside,s step function,and its inverse problem that,s it given a function G(x,s) obtain the Operator L,my question is how are the functions, a(x) b(x) and c(x9 related to the values of G(x,s) and its derivatives...

I am addicted to the show "Green Wing" on BBC. Anyone else watch this? I love BBCA. What TV I do watch BBCA takes up about 80% of that time.

A recent spate of now closed threads gave me an irriisistable impulse to ask this question...

Can you please post pictures (Preferrably close-ups but they don't have to be) of natural (Not man-made) green eyes in this thread (I need them for a school project I am doing on genetics) and I am having trouble finding close-ups of ones that I know are natural) (If the pictures look really...

Pure copper metal is orange (or pink after being anodized), copper hydroxide is blue, copper oxide is black. So then why is the statue of liberty green?

What speed would a vehical have to travel in order to red traffic light into a green traffic light? i know that green light has wavelength of 5.40x10^-7 m frequency of 5.56x10^14 hz red light has wavelength of 6.60x10^-7 m frequency...

I have a Homework here I'm trying to solve like the last 3-4 hours but somehow I'm stuck so I ask you guys for help: They gave me the Green Function like this: http://idefix.physik.uni-freiburg.de/~aufgabe/THEO204/theo9/img50.png with...

Ok, a man lives in a one story house with no poarch or basement, If the walls are green, the coach is green, the lamp is green and the ceiling is green what color are the stairs?

Please please don't do it. Hear me out... Yes, our two-party system is a heavy cross to bear, and I would love to do away with it. It's a real shame that we are reduced to chosing between the lesser of two evils, but that is the reality of the situation we have. Let's say you have 11...

in some photos, mixed among the red white and blue stars, are green stars. Any idea what causes this?

from a physical argument if plantes were black they would absorbe more energy from the sun then..why clorophile is green anbd why the plants are green?..

Let be L(Y)=a0(x)D^2y+a1(x)Dy+a2(x) with the boundary conditions Y(a)=c and Y(b)=d then we could construct the Green function L(y)G(x,s)=d(x-s) then my question is if given the G(x,s) we could construct the L(y) operator considering is a second order differential equation.

Hello there, I am glad that I found this forum. Because I have a little bit trouble with theoretical physics. The problem is the Green function in theoretical electrodynamic. I try to understand the difference between the Dirichlet Condition and the Neumann Condition. I understand...

In this glaciated upland region why is the the river or lake a green colour? Me thinks that it is obviously to do with the sediment on the bed of the lake. Perhaps it is a chalk bed or a solution lake?