Application Definition and 998 Threads

An application program (app or application for short) is a computer program designed to carry out a specific task other than one relating to the operation of the computer itself, typically to be used by end-users. Examples of an application include a word processor and a media player. The collective noun refers to all applications collectively. The other principal classifications of software are system software, relating to the operation of the computer, and utility software ("utilities").
Applications may be bundled with the computer and its system software or published separately and may be coded as proprietary, open-source, or projects. Apps built for mobile platforms are called mobile apps.

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  1. A

    MHB What's the Logic of this Application using Math

    Here i attached some mobile application screenshots I want to know the logic of this application 1:- It have four screens and every screen have numbers. 2:-Application asked on every screen "Do you Know your age is here in these numbers". 3:-If i see the number is on the screen then i pressed...
  2. P

    A question about an opamp or comparator application

    hello dears i have a question at op amp could i use the comparator to compare between to differential signals .. more specific if i have tow signals out of phase (180) and unequal amplitude could i use op amp comparator or differential amplifier to distinguish which of them is higher amplitude ??
  3. I

    Admissions Application list too ambitious for non-traditional student?

    I was hoping I could get some feedback from anyone who might have insight into the grad school application process. I've applied to 11 schools so far, but I don't know how to tell if they're all a bit too optimistic. I was hoping that someone could recommend a "safety" school or two. About me...
  4. S

    Looking for locking spring mechanism for cassette-like application

    Hi, I want to apologize in advance because I have not studied mechanical engineering in any profound sense other than in my hobbyist projects (I focus more on software engineering). Currently I am creating a real life Raspberry Pip Boy 3000 MK 4 from the Fallout 4 video game with instead of...
  5. O

    Schools George Washington University Statement of Purpose Length

    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...
  6. dkotschessaa

    I How do you answer "So what's the practical application....?"

    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...
  7. Hannibal247

    Heat Transfer Application examples of using fins

    Hello, Im struggling a bit with this problem. (uploaded)I don't know how to sketch the equivalent thermal circuit for any of them. Does it have to look like anything like that? the thermal circuits are for b) parallel connectd right? and for aswell? And I am getting wrong answers for a)...
  8. Fips

    Understanding Biot-Savart's Law for a Rotating Disc with Current Density

    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
  9. pesslovany

    Application of Gauss' law - point charge in hollow sphere

    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...
  10. A

    Mean value thereom application

    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...
  11. evinda

    MHB Applying the Chain Rule to Derive Solutions of the Heat Equation

    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...
  12. Joosh

    Where did I go wrong with my application of Stoke's Theorem?

    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...
  13. T

    MHB So, the car takes approximately 8.43 seconds to travel 100 meters.

    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...
  14. E

    Application of Fermat's Little Theorem

    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...
  15. N

    Admissions Put down Multiple Research interests in application?

    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...
  16. Dewgale

    How Can Maxwell's Relations Be Applied to Thermodynamic Equations?

    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...
  17. J

    Schools Can I Get Into Top European MSc Physics Programs with a 2:1 Degree?

    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...
  18. Biscuit

    Admissions Is it too late for OSU's early action if I submit my application tomorrow?

    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...
  19. Biscuit

    Schools Common College Application Activities -- what should I list?

    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?
  20. D

    Testing multipole expansion Application ID: 31901

    like in the manual i have done the following steps 1.built 100nm radius sphere 2.pressed build all 3. added air material 4.added silicon materal withrefractive index 1.5 5. selected all the domains and pressed Build All but when i press both "test application" or "compute" i get an empty...
  21. M

    Admissions PhD Application Personal Statement Help: How Detailed?

    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:
  22. H

    Application of r-groups of n-objects

    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...
  23. I

    Application of circularity of hybrid product

    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...
  24. E

    Possible confusion regarding application of Kirchoff's Laws?

    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...
  25. M

    Admissions PhD Application: Personal Statement in Story-Telling Style?

    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...
  26. M

    Admissions PhD Application -- Is Publication to Smaller Journals necessary?

    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...
  27. M

    Admissions Resume Tips for Medical Physics PhD Application

    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...
  28. B

    Engineering Self-teaching for a specific application

    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...
  29. M

    I Recursion theorem: application in proof

    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...
  30. J

    Schools Apply Grad School: Nominated for JYA Programme at Cambridge

    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...
  31. S

    Pressure Drop In Bulb : Application of Graham's Law

    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...
  32. A

    Digital application for a duty rota

    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...
  33. A

    I Time lag before application of force

    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...
  34. Arij

    2nd Diff eq application - Vertical stretch

    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...
  35. DeathbyGreen

    Admissions Optimizing Your Graduate Application: Importance of Early Submission

    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...
  36. C

    Linear application and différential

    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...
  37. davidbenari

    Schools Dual citizenship, which should I use for college application

    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...
  38. D

    Studying Does only the application really matter?

    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...
  39. Z

    Java ListBox (JList) not visible on application start up

    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...
  40. Y

    B An application of the uncertainty principle

    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...
  41. ashsully

    Fixing a Rusted Snowboard Edge with REDOX Reactions

    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...
  42. S

    Bode Plot Application: Increase Frequency Response & Magnitude Understanding

    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?
  43. R

    Other Physics Principles and Application best book for high school

    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 ... ?
  44. J

    An application of free fall (DE) model to industry

    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
  45. P

    Application of derivative rules in physics

    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...
  46. Z

    Calculate New Load - rig application

    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.
  47. Evangeline101

    Application of Quadratic Functions that involve finding equation

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

    MHB Word Problem: Application Of Linear Equations (Typo In Textbook?)

    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!
  49. Xico Sim

    I Isospin conservation - an application

    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...
  50. S

    Differentiation application problem

    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...
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