What is Application: Definition and 996 Discussions

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. L

    Application of Gauss' law - some doubts

    Application of Gauss' law -- some doubts Homework Statement Revered Members, I have attached images of applications of Gauss' law namely 1) Electric field due to an infinitely long charged wire and 2) Electric field due to an infinite charged plane sheet. In both cases Gaussian surface is...
  2. T

    Correct Application of Divergence Theorem?

    Homework Statement http://img593.imageshack.us/img593/5713/skjermbilde20111204kl11.png The Attempt at a Solution I thought it seemed appropriate to use divergence theorem here: I have, div F = 0 + 1 + x = 1+x I let that 0≤z≤c. If, x/a + y/b = 1then y=b(1-x/a) x/a +z/c = 1 then...
  3. B

    How Does Stokes' Theorem Apply to Complex Surface Integrals?

    Homework Statement Let F(x, y, z) = \left ( e^{-y^2} + y^{1+x^2} +cos(z), -z, y \right) Let s Be the portion of the paraboloid y^2+z^2=4(x+1) for 0 \leq x \leq 3 and the portion of the sphere x^2 + y^2 +z^2 = 4 for x \leq 0 Find \iint\limits_s curl(\vec{F}) d \vec{s} Homework...
  4. T

    US Internship Application - a question for Americans.

    Hello, I'm intending to apply for an REU internship at Caltech for next summer, and I have a question that somebody American might be able to help me with. The application is an online application which asks for your name, address, programming languages etc. It seems like the application is...
  5. J

    Which GPA Should I Include on My Grad School Application?

    I am applying to grad schools now, and I have a question on what I should be putting in the space that asks for GPA. I transferred from a community college, and some of my community college classes go back 11 years. The GPA I'm graduating with from my 4 year university only takes into...
  6. L

    Rigid Body Rotation Application

    Homework Statement I'm trying to include rigid body rotation in a problem I'm working on but can't seem to figure it out. Two shafts oriented vertically are connected by a thin cross member of length R. Holding one shaft stationary and applying a constant tangential load F to the other...
  7. J

    Where Should I Install an Electric Holding Brake on a Gearbox-Motor System?

    Quick one If I have an electric motor with a gear box (what ever ratio) and I want to install an electric holding brake will my holding power be greater if the brake is installed on the output shaft of the gearbox or the shaft of the driving motor to the gearbox ? my educated guess is that...
  8. V

    Minimizing Triangle Area: Calculus Help for Line Equation at (1,4)

    Homework Statement Find an equation of the line passing through the point (1, 4) such that the area of the triangle formed by this line and the positive coordinate axes is as small as possible. Homework Equations The Attempt at a Solution No idea where to start this one please...
  9. sunrah

    What is the Application of Dirac Delta in Charge Constellations?

    Homework Statement We have to give the total charge, dipol and quadrupol moments of a charge constellation, but I seem to be falling at the first hurdle. Q = \frac{1}{4\pi \epsilon_{0}} \int_{vol} \rho(\vec{r}) d^{3}\vec{r} whereby the charge density of the group of particles is...
  10. A

    Help with graduate ChemE application

    Help with graduate ChemE application! I really want to apply to MIT for the ChemE Phd program and apparently they look at your class rank quite a bit...I might not have a very good class rank, let alone be the top student! What are my chances going to be if I spend about 2.5 doing research and...
  11. S

    How to Remove Blue Boxes in SciDAVis Plotting Application?

    m using SciDAVis on a Athlon based system running Debian Linux. I am try to produce some graph of functions. The math part is working fine. However, when I try to change the axis labels, a blue box forms around the axis label and remains there. When I export the plot, the blue box is still...
  12. S

    How do I remove the blue box around axis labels in SciDAVis?

    This might be the wrong forum for this question, anyway here it is: I'm using SciDAVis on a Athlon based system running Debian Linux. I am try to produce some graph of functions. The math part is working fine. However, when I try to change the axis labels, a blue box forms around the axis...
  13. U

    Simple maximum/minimum application (temperature in a circular plate)

    Homework Statement I have a circular plate made of some metal and it is shaped like the equation x^2 + y^2 \leqslant 1 The temperature at any given point in this plate is given by the function T(x,y) = x^2 -x+2y^2 I'm supposed to find the hottest and the coldest points. Homework...
  14. M

    Application of vector - answer checking

    Homework Statement Two ships, A and B are sailing along straight routes with constant velocities. At 10 o clock morning, ship B is 8 nautical miles from A and its bearing from A is 315°. At 10.15 in the morning, ship B is 6 nautical miles from A and its bearing from A is 320°. Find the...
  15. pairofstrings

    Which language is used in creating windows OS and it's application?

    Hi. Which language is used in creating windows OS and it's application?
  16. 8

    Steam Engine work application problem

    Homework Statement In a steam engine the pressure and volume of steam satisfy the equation PV1.4=k, where k is a constant. Calculate the work done by the engine (in ft/lbs) during a cycle when the steam starts at a pressure of 100 lb/in2 and a volume of 400in3 and expands to a volume of...
  17. E

    Question on banked curve, Application of Newtons Laws

    Homework Statement A turn in the road with a radius of 30m is banked at an angle of 40 degrees. If \mu=.75, what is the minimum and max speed a 1200 kg car can travel without sliding off the turn. Homework Equations F=ma, Mv^2/R, Fw = mg The Attempt at a Solution Alright, so...
  18. M

    Proving the Range of a Polynomial Function Using Set Theory

    Polynomial Function. Homework Statement f:ℝ→ℝ x→x^2+x+2 Homework Equations Prove that: f(ℝ)=[7/4,+∞[ The Attempt at a Solution Well I don't know how answer this, so can someone give me a clue on how to start it off?
  19. 8

    Work integration application problem, answer check

    Homework Statement A leaky 6lb bucket is lifted from the ground to a height of 30ft at a constant speed with a rope that weighs .5lb/ft. Initially, the bucket contains 60lbs of water, but the water leaks out at a constant rate and finishes draining just as the bucket reaches the 30ft level...
  20. I

    Programs Application procedure for PhDs (UK)

    So I am wanting to start applying for PhDs for entry in Sept/Oct 2012, I graduated from Uni last year so I don't really have any guidance on this! I do have a good idea of what I want to apply to do, and have a list of places I would like to apply (saving this for another thread haha :) )...
  21. E

    Application of Gauss's Law to Charged Insulators

    Homework Statement A cylindrical shell of radius 7.00 cm and length 240 cm has its charge uniformly distributed on its curved surface. The magnitude of the electric field at a point 19.0 cm ra- dially outward from its axis (measured from the midpoint of the shell) is 36.0 kN/C. Use approximate...
  22. M

    Differential Calculus, Related Rates Application.

    Homework Statement A ship moving at 8 mi per hour, Sails W for 2 hours, then turns N 30 E. A search light, placed at the starting point, follows the ship. Find how fast the light is rotating, (a) 3 hours after the start; (b) just after the turn. Homework Equations The Attempt at...
  23. M

    How Fast Does the Shadow Move on a Dome as a Balloon Rises?

    Homework Statement A hemispherical dome has a diameter of 100m. A search light was placed at point A as shown at the middle of the dome at B. A balloon was released vertically at a velocity of 4m/s. How fast will the shadow of the balloon move alone the roof if it traveled 25 m vertically...
  24. T

    Hybrid pulse-jet/rocket motor for space application

    Hi, Im currently working on a project to design a hybrid pulse-je/rocket motor for space applications. The Pulse jet is to lift a payload in the Earth's atmosphere then reverts to a rocket motor in space. The idea is to reduce the use of on-board oxygen during ascent since it initially...
  25. T

    How Much Fuel Must a Rocket Burn to Double Its Exhaust Speed?

    Homework Statement A rocket burning it's onboard fuel while moving through space has a velocity v(t) and mass m(t) at time t. If the exhaust gasses escape with velocity ve relative to the rocket , it can be deduced from Newton's Second Law of Motion that...
  26. S

    Would open or flanged ball bearings be better for this application?

    Hey all, recently found this site about ball bearings and have a question: http://www.mcmaster.com/#standard-ball-and-roller-bearings/=ecllbn I have an application that will have a gear sit on top of the ball bearing as it spins (the weight won't be too large, don't want it to be), what...
  27. P

    Admissions Getting Into MIT to the Application Process

    Anyone knows how to get admission in MIT ??
  28. A

    Application of Linear Algebra to Physics

    I've just begun my 2nd year of study at my University and as part of a program requirement, must take a Liner Algebra course. I love mathematics, but I have never experienced much of Linear Algebra. I was just wondering how Linear Algebra applies to Physics, what branches, etc.
  29. V

    Tension. Application of Newton's Laws.

    Homework Statement Two weights are hanging by the following cables, A, B, C. 1. Find the tension in Cable A. 2. Find the tension in Cables B and C. -----ceiling---------- \ 60) (60 / \ / \ / B \ / C \ / \ / [_]...
  30. B

    Schools How Important is summer research to a grad school application?

    I'm a third year physics student interested in grad school. My marks are ok (85% average), and I should be able to get a letter of reference for grad school based on a 4th year Honours project. How important is a summer research position to a grad school application? I can probably get a...
  31. N

    What is application of nonlinear sigma model?

    Please teach me this: I hear that linear sigma model has application in pion,nuclear physics.But do not understand what is the application of nonlinear sigma model in QFT? Thank you very much in advance.
  32. W

    Application of Bolanzo-Weierstrauss

    Let {xn}n = 1\infty be a bounded sequence and {xnj} be a convergent subsequence, each one converging to L. Want to show that {xn[}[/itex]n = 1\infty converges to L. My proof is as follows. Suppose that {xn}n = 1\infty does not converge to L; this implies that there is a...
  33. A

    How Is Coulomb's Law Applied to Calculate Forces Between Point Charges?

    A 5C point charge located at (2m, 3m, 4m) and a 6C point charge located at (4m, 3m, 2m) together exert a net force on a 7C point charge located at (2m, 4m, 3m) is most closely represented by... (a) k(-6i + 15j - 10k) N (b) k(-8i + 13j - 12k) N (c) k(7i + 14j - 11k) N (d) k(7i - 14j - 11k)...
  34. A

    Testing Great UC application essay examples

    are there any places (hopefully online since it'll be easier for me), where I can read examples of good UC application essays? (not just any essay, but essays that are picked as well written and posted public as an example). There're probably lot of essays out there, but it does not mention(in...
  35. J

    How Does Weight Influence Net Force on a Submarine?

    A 1450 kg submarine rises straight up toward the surface. Seawater exerts both an upward buoyant force of 16,140 N on the submarine and a downward resistive force of 1030 N.My question: Is the weight of the submarine included in the net force? If the weight is taken into account, is it included...
  36. F

    Spring question, theory and a simple application.

    Homework Statement The stopping distance of a 0.40 kg weight which slides into a spring with k = 750 N/m at a speed of 1/2 m/s is 0.012 metres. Can we now calculate the original uncompressed length of the spring from this info? The Attempt at a Solution m = 0.4kg k = 750N/m v =...
  37. H

    Application: using energy and momentum to calculate estimated weight

    Homework Statement An arctic hunter goes hunting polar bears and shoots one. He finds it lying dead on a large patch of almost frictionless ice. He has no scales or weighing device of any kind (and of course, there's nothing to hang it on) but he does have a long rope. How can he get a pretty...
  38. K

    Real world application for math example (Maybe pattern recognition)

    Homework Statement My dad is driving coal. His truck has a limited coal-capacity, and enough fuel. He drives this coal from the central which has enough coal, to farmers that need different amounts. As there are many farmers, he has to drive back and forth several times. He knows all...
  39. M

    Can effective piezoelectric transformer be implemented for this application?

    Is it possible to use a piezoelectric transformer to step up voltages of 3 to 12 volts to as much as 5 kilovolts? Below are more details of what I would like to do: Input into transformer: square waves, 0 to 12-volt amplitude with frequency range of 100 Hz to 100 KHz Output from transformer...
  40. A

    Physic application of matrices?

    I start to learn about matrices and their algebra, but I am wondering what physical application they have. I know that matrices have application in optics, which is called “Matrix Optics”, but do they have other applications? Can you give different and real physical examples with matrix algebra...
  41. T

    Programs How truthful should I be on PhD application?

    I am your regular White guy and a Texan for 6 generations. The PhD application form asks for your place of birth. Now I was actually born in Mexico but soon after I was born, my mother married a guy from Romania and moved to Romania. He wanted to immigrate to the US, so he registered...
  42. T

    Ferrofluid Display Cell construction- hydrophilic surface application help

    Greetings everyone, I'm constructing a ferrofluid display cell using FerroTech EFH1 ferrofluid inside of a round bottom pyrex beaker. The ferrofluid is oil based, so it is not hydrophilic. The liquid that the ferrofluid will be suspended in is Magnesium Citrate (a household laxative... and no...
  43. J

    How Do Vectors Solve Real-World Problems?

    1. The Ministry of Health has determined that t day after the detection of a communicable disease, the percent P of a city’s population that will be affected is given by the equation P (t) = 10te^-0.1t 1 ≤ t ≥ 15. How many days after detection will the maximum percent of the population are...
  44. N

    Speed of Reaction Application Question

    Homework Statement The apparatus below shows an experiment to investigate the speed of reaction between lithium and water. A piece of lithium is wrapped in steel gauze and placed in a beaker of ]water. The volume of gas collected in the measuring cylinder is measured at 10s time interval...
  45. I

    Work and displacement of the point of application

    I have this example from my physics books which says: If a skater pushes against the wall and the skater moves, the wall does no work and the motion of the skater only results from the internal work of the skater. It also says that the wall does no work because there is no motion of its point...
  46. C

    Automotive Automotive application for absorption cycle?

    Hi there, I joined specifically to ask for help in exploring the possibility of harvesting the waste heat from a cars engine and recycling this energy to improve the engines efficiency. I'm assuming most people know about thermo dynamics, internal combustion and volumetric efficiency I:-p...
  47. K

    Small problem understanding application of chain rule

    Homework Statement I have proven in two ways (correctly) that the derivative of ln|x| = 1/x (note absolute value does vanish) Now I open my textbook and see a general rule that \frac{d}{dx} ln (u) = \frac{u'}{u} And the not so general derivative of |x| is \frac{d}{dx} |x| =...
  48. B

    Vent silencer -For pipeline pre comm application

    I am looking forward to design vent silencer , which shall be temporarly connected to the 48'' pipeline for depressurising activites during gas pipeline pre comminissioning ativites. Dry air shall be injected into pipeline which shall proppel the pigs and move the water infort of the pigs for...
  49. M

    Fictional Application of Ring-Vortex

    I've asked a few question here pertaining to an ongoing bit of writing in the fictional genres, and this is another. Given the fictional nature, two things I DON'T need are: People thinking this is a serious question about real-world applications. The assumption that, "just write what you...
  50. A

    Conformal mapping application- electrostatics

    Homework Statement Consider the transformation: w = i[(1-z)/1+z)] Find the electrostatic potential V in the space enclosed by the half circle x^2 + y^2 = 1, y =>0 and the line y = 0 when V = 0 on the circular boundary and V = 1 on the line segment [-1,1]. Homework Equations w = u +...
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