Application Definition and 945 Threads

Long shot, but has anyone applied to the GWU Physics PhD program? If so, how long was your Statement of Purpose? There is no information about it on the application, I ran across this page: https://www.programs.gwu.edu/graduate/physics. This says 250-500 words, but asks for "your academic...

I suppose you recognize, by title, the situation I am referring to. I don't know if physics people get it as often as math people. The situation of course is that I tell somebody that I am studying math, and if I mention some specifics, like mention Topology or Algebra, (which I have to sort...

Homework Statement There's a disc with a current density surface σ, with radius R and angular velocity ω Find the B Homework Equations α = vσ=ωrσ The Attempt at a Solution I'm having problems understanding why the cross product gives αr

Firstly I appologize, that I am not native english speaker and I don't study physics(but cybernetics we are getting just some general knowledge about physics), but hopeffuly I will write this right. Homework Statement We know that inside of a conductive object is protected from influence of...

Homework Statement Suppose that x,y are in (0,0.5). Show that: $$\left|\frac{1}{x^3}-\frac{1}{y^3}\right| ≥ 48|x-y|$$ Homework EquationsThe Attempt at a Solution I think that we need a function ##f(t) = t^{-3}## & ##f'(t) = -3t^{-4}##. Now we use the MVT here to show that there is some c that...

Hello! (Wave) Suppose that $u(t,x)$ is a solution of the heat equation $u_t-\Delta u=0$ in $(0,+\infty) \times \mathbb{R}^n$. I want to show that $u_k \equiv u(k^2 t, kx)$ is also a solution of the heat equation in $(0,+\infty) \times \mathbb{R}^n, \forall x \in \mathbb{R}^n$. If we have a...

Hello again, everyone. Have a multivariate calculus question this time around. If anyone can point me in the right direction and help me see where WebAssign finds me wrong, it would be greatly appreciated. 1. Homework Statement Homework Equations ∫∫ScurlF ⋅ dS = ∫CF ⋅ dr The Attempt at a...

Hi, another question I am having trouble with so my thought at the moment is to integrate a(t), which results in 1/2at^2 which is the kinematic equation for distance and then solve for the equation to equal 100. Just doesn't seem right to me and possibly too easy a solution.. think I am...

Homework Statement Find the remainder of ##4^{87}## in the division by ##17##. Homework Equations Fermat's Little Theorem: If ##p## is prime and ##a## is an integer not divisible by ##p##, then ##a^{p-1} \equiv 1 (\mod \space p)## or equivalently, ##a^p \equiv a (\mod \space p)## The...

So most application have three slots for research interests. My question is should we put down our top three or would this look like we are indecisive about what we want and should only put down one? That is, would the committee consider us for all three separately since each one has a different...

Homework Statement This is question 2.18 from Bowley and Sanchez, "Introductory Statistical Mechanics" . Show with the help of Maxwell's Relations that $$T dS = C_v dT + T (\frac{\partial P}{\partial T})_V dV$$ and $$TdS = C_p dT - T( \frac{\partial V}{\partial T})_P dP.$$ Then, prove that...

My questions are regarding admissions at top universities in Europe. Many of them are of a rather general nature, I hope that is okay. I am from Austria (EU) and I currently studying for a BSc in Physics from the University of Vienna. I will graduate in July 2017 after three years of full time...

The early action for OSU is due nov 1, but I have some stuff I need to finalize for tomorrow. If I finish everything and turn it in tomorrow will it be too late for early action. Some of my friends are saying this stuff has to process before it sends. Early action is super important for me. Any...

I am applying to OSU and when filling out the common app there are 10 slots for activities. I have taken online physics classes since the 9th grade. Would this be something I could put down as an activity?

How detailed should the research experience be? For example, are things like "I developed a C algorithm to help the process of XXX?" worth mentioning? Or should this go to the Curriculum Vitae? Thank you!:woot:

Homework Statement How many ways can the letters {"T", "O", "O", "T"} be arranged? How many groups of project team pairs can be formed from a pool of 4 students (2 math majors and 2 physics majors)? Homework Equations $$\text{outcomes} = \frac{n!}{n_1!n_2! \dots n_r!}$$ The Attempt at a...

Homework Statement http://photouploads.com/images/8ba21e.png {moderator's not: Inserted image so it's visible without having to follow a link} 2. Homework Equations a·(b x c) = b·(c x a) The Attempt at a Solution How did they get from the (b) to (c)? In particular, I am referring to the...

Homework Statement Determine Currents ##I_{1}, I_{2}, I_{3}## Homework Equations Kirchoff's Rules: $$\sum_{i=1}^n I_{i} = 0$$ $$\sum_{i=1}^n V_{i} = 0$$The Attempt at a Solution Basically, I'm not sure if I'm applying the Loop Law correctly. For example, in Loop A, going clockwise from...

I am not sure if I can write the ps in the form of a story-telling of how I became interested in the graduate field of study, which naturally talks about my research/other experience in the chronological order, or directly jump straight into chunks of paragraphs (of course with transitioning...

This summer I did some research and had positive results but my part contributed to a small portion of the big grant. My PI told me we could submit to some "side" journals to get publications but I am not sure if this is necessary because the admission committees will see my poster I created...

General Tips on What to focus on, what to avoid? :woot: 3 Specific questions: Should I keep it in ONE page? I have been helping on a grant which has been approved by NIH, how much details of the project should I include in the resume: the detailed goal of the grant, grant number, etc? Should I...

I am a computer science undergrad (almost done, so I can't switch to engineering sadly) and I was wondering if someone from the physics/engineering community could advise me on this. I know it sounds crazy but my question is: Is it possible/reasonable to teach oneself the physics, aeronautical...

I have read a proof but I have a question. To give some context, I first wrote down this proof as written in the book. First, I provide the recursion theorem though. Recursion theorem: Let H be a set. Let ##e \in H##. Let ##k: \mathbb{N} \rightarrow H## be a function. Then there exists a...

Hi, I'm currently a final undergrad student and trying to apply for grad school. The thing is that on the application forms there is a section about "scholarships, prizes and distinctions" and last year I was nominated for the JYA programme at Cambridge by our university with a conditional...

Homework Statement The pressure in a bulb dropped from 2000 to 1500 mm of mercury in 50 minutes when the contained oxygen leaked through a small hole. The bulb was then evacuated. A mixture of oxygen and another gas of molecular weight 72 in the molar ratio of 1 : 1 at a total pressure of 6000...

I am interested to know whether there is an application to make a duty rota for employees. The application should allow all employee to select their preferred days, even shifts within the day, and the result will be the one that makes the best match to their initial choices. Of course, there...

Hi everyone, I present a situation here: Say there are two points A and B in space separated by a distance d. I create two charged particles (of any charge) at points A and B at time t=0. After how long will they experience force due to one another? My answer: We know that electric fields...

Hello guys, first I am sorry I didn't use the template. I deleted it by mistake and I didn't know how to create a new thread from scratch. so I have two cases of the same problem, on with initial conditions of pulling down and the other pushing up, I tried different signs but It didn't work...

Hi! I have a question related to graduate (PhD admission). I am about to finish my MS in Europe and am applying to a university in Canada for my PhD. The university requires 2 reference letters. Two people have said that they will write me letters, and I can see on my application account when...

Homework Statement Let be E a normded vectoriel space, ##dim(E) = m \in \mathbb{N}^{*}##, I have to show that ##\exists \rho_{1}, \rho_{2} > 0 | \forall u \in L(E), ||u^{m} - Id| \leq \rho_{1} \Rightarrow |u - Id| \leq \rho_{2}##. Homework Equations Nothing. The Attempt at a Solution [/B] I...

I am a dual mexican and american citizen but I study in Mexico and I need to apply to other colleges for an international exchange. My question to you is: do you think I should apply to other colleges as a mexican or as an american? I'm applying to Canada, Europe, and the US. I was thinking...

I majored in a science in college and a few years after college I think that engineering and applications are the only thing that make math and science relevant to society. I mean otherwise they're all just head knowledge and nothing justifies why society as a whole should keep them around...

Hi, I am trying to store values in a listbox. I have created frame & a panel inside a frame & i am using BorderLayout inside panel. I have created a button & a listBox & added them to the panel. But when i run the application, it displays the button only & when i increase the size of window...

It is in the IB textbook. Said as an application of the uncertainty principle, consider an electron, which is known to be confined in a region of size L. We know the uncertainty in position of the electron must satisfy Δx<L. Therefore, according to the uncertainty principle, we can work out...

Homework Statement Hi all, I'm fairly new to physics forums so cut me some slack for being a noob. I've just noticed that my brand new snowboard's edge has rusted (oxidised). I live in Australia and it's been stored in my room receiving sunlight everyday. I'm guessing this probably caused the...

Hello, After long time i am able to find Laplace transform function but can't understand the bode plot which give information of frequency response and magnitude i think plaese anyway here how can push my thinking ahead in it?

The book Physics Principles and Application by Douglas C Giancoli can give me the full curriculum in physics from grade 9 to 12 ? Or I need another book to cover all physics learned in high school ? All equations laws ... ?

Could someone tell me an application of the model of free fall to industry or more generally by using Newton's second law and the law of gravitation, construct a model similar to the free fall one, that has an application in industry

Homework Statement Hi everyone, I'm currently working on year 12 maths and am able to answer questions in the maths book for the various rules of differentiation (chain, product, quotient) and can determine which questions should be answered using which rules. But in the maths book, the...

Homework Statement A rig accelerates a load of 200,000 lbf from zero to 60 ft/min in 5 seconds. Homework Equations Compute new load shown on the hook load indicator ? The Attempt at a Solution Calculated the distance of load l = 4.99 ft.

Homework Statement Homework Equations none The Attempt at a Solution Is this correct? Thanks.

Is there a difference between the following statement "The number of dimes is 5 times more than twice the number of nickels" and "The number of dimes is 5 more than twice number of nickels"? The 5 times more... and the 5 more than... confuses me. Please clarify this for me. Thanks!

Hi guys! I'm trying to understand how to use the fact that the total isospin is conserved in all strong processes in the particular case (vide Griffiths, pages 118 and 119): $$ p+p \rightarrow d+\pi^+ $$ Griffiths first argues that the deuteron d has isospin I=0, because of experimental...

Homework Statement An inverted cone has a depth of 10cm and a base radius of 5cm. Water is poured into it at the rate of 1.5 cm^3/ min. Find the rate at which level of water in the cone is rising, when the depth of water is 4cm. Homework EquationsThe Attempt at a Solution [/B] I know that...

Homework Statement Find the Green's function $G(t,\tau)$ that satisfies $$\frac{\text{d}^2G(t,\tau)}{\text{d}t^2}+\alpha\frac{\text{d}G(t,\tau)}{\text{d}t}=\delta(t-\tau)$$ under the boundary conditions $$G(0,\tau)=0~~~\text{ and }~~~\frac{\text{d}G(t,\tau)}{\text{d}t}=0\big|_{t=0}$$ Then...

Here is the website: http://www.columbia.edu/itc/applied/e3101/SVD_applications.pdf I need help on understanding the second part of the document, page 13 onwards. On page 15, it showed 3 data sets, relative elevation as a function of kilometers across axis, however at page 16, the author...

I have a degree in mechanical engineering and have taken several computer science courses, so my resume since graduating in 2007 consists of engineering jobs along with my most recent software developer job, which I was laid off from a few months ago. I'm starting grad school next fall (2017)...

Homework Statement Actually, my confusion originated from solving two different problems... 1) A point object of mass 'm' moving horizontally hits the lower end of the uniform thin rod of length 'l' and mass 'm' and sticks to it. The rod is resting on a horizontal, frictionless surface and...

Ok, so I read that a tuple is an ordered list of n elements, where n is a non-negative integer. Sometimes I get confused with tuples and partially ordered sets. So if I organized a list of all the airplanes in a particular airport, would that be a tuple, or would that be a set? I'm leaning...

Hello I was learning about determinants and matrices. I learned the generalization of getting the determinant of an n by n matrix. I then applied this to vector space (i + j + k) via a cross product and noticed that you leave the i j and k in their own columns in the first row of the matrix...