What is Applied: Definition and 1000 Discussions

Applied science is the use of the scientific method and knowledge obtained via conclusions from the method to attain practical goals. It includes a broad range of disciplines such as engineering and medicine. Applied science is often contrasted with basic science, which is focused on advancing scientific theories and laws that explain and predict events in the natural world.
Applied science can also apply formal science, such as statistics and probability theory, as in epidemiology. Genetic epidemiology is an applied science applying both biological and statistical methods.

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  1. G

    If a uniform beam was in space and only was applied a force on one side (Stress)

    If a uniform beam was in space (no gravity or resistance of any kind) and only was applied a force F on only one side, does the inside of the beam feel a stress and deform? If so, what does the stress equal? Can you explain why/why not the beam feels a stress or not? I know that that if...
  2. R

    Density altitude and applied ballistics

    Hello, I am struggling with understanding air temperatures effect on density altitude and it's effect on the flight of a bullet. I understand that as temp goes up air resistance/density goes down but in looking at a chart I have I can’t seem to make out a pattern in relation to temp. It...
  3. W

    Programs How to get to a PhD in Applied Physics ?

    Hey everyone! I've spent a lot of time checking out various posts through this site but I'm definitely in need of some guidance right now so I figured I'd ask a question of my own. Basically I'm an undergrad (sophomore) right now, and I'm pretty positive I want to work my way up to an...
  4. I

    Mass on plane, applied force, and kinetic friction

    Homework Statement A block of mass 15.0 kg sits on a plane that is inclined at a 37.0° angle to the horizontal. A 227 N force, pointing up the plane, is applied to the block. The coefficient of kinetic friction is 0.500. What is the speed of the block after 2.00 s? Homework Equations m =...
  5. D

    Why can this formula be applied for diffraction gratings?

    So for 2 point sources (or 2 slits) the formula for finding the lines of maxima and minima for waves is n(lambda)=dsin(theta) and when n is an integer you would expect to find a maxima. However, I don't understand why this formula also applies to diffraction gratings since there are way more...
  6. G

    Applied Calculus problem-1st year engineering

    Recall that the bending moment, M, at a distance, x meters, from the fixed end of a cantilever beam is given in terms of the second derivative of the deflection, y, of the beam. Determine the deflection,y, of the beam at the free end of the beam. Assume that the beam is perpendicular to the wall...
  7. S

    Relationship between Applied Force and Friction: A Graphical Analysis

    So my lecturer asked a physics audience (final year and postgrad) this question and no one got it right (at first): Consider a block pushed back and forth on a flat table. Draw a graph of the applied force vs. friction. Take a minute to figure this one out yourself, then click this link for his...
  8. P

    Hi i'm an applied maths student i'd like to study about catenary

    hi I'm an applied maths student i'd like to study about catenary.. where can i get details of catenary and its applications in detail?which book i can refer or is there any website i can go for?
  9. S

    What Is the Minimum Polynomial for a Given Nonlinear Function in P2?

    Homework Statement Let P2 be the vector space of real polynomials of degree less or equal than 2. Define the (nonlinear) function E : P2 to R as E(p)=integral from 0 to 1 of ((2/pi)*cos((pi*x)/2)-p(x))^2 dx where p=p(x) is a polynomial in P2. Find the point of minimun for E, i.e. find...
  10. I

    Magnetism lingo: Applied H? or Applied B?

    When discussing magnetism or magnetic systems, Do you apply an H-field? or apply a B-field? I suppose this is in the general situation where you apply a magnetic field to a material. In relation to B-H loop showing hysteresis, I notice that the "x-axis", typically dependent variable, is...
  11. MathWarrior

    Applied Math -> Computer Science/Computational Engineer/EE

    I am nearly done with all my basic undergraduate course work and will soon be pursuing the rest of my applied math degree. There are a variety of upper division classes that I have the option of taking. I was wondering which ones seem best suited if you were going to get your masters in either...
  12. A

    Can the concept of hybridization be applied to what we consider ionic,

    Can the concept of hybridization be applied to what we consider ionic, such as MgCl2 (sp hybridization, if we apply it)?
  13. C

    Finding the force applied on a foot

    So this is the question summarized: Mass of the person is 75kg, the person is standing on his/her tiptoes. There are three forces acting on the foot which are: -Upward Normal force from toes - Calculated to be mg=735N (Fn) -Downward force from ankle onto foot (Fa) -Upward force from tibia to...
  14. S

    What are Spherical Harmonics and their Applicability in Applied Math?

    Hi, Can anyone please help me understand what spherical harmonics are and their applicability?
  15. J

    Chances of getting into Aerospace MS with Applied Physics BS

    I'm a Applied Physics major at a UC and will be graduating in April. I will be applying to grad school in the fall and I am considering trying to get into a masters program in aerospace engineering. I am curious about the chances of making that transition. I have taken an upper division...
  16. H

    Can 600 Tons of Force Be Applied with Two 300 Ton Cylinders?

    Hi guys I have a question I need answered. I have a small machine shop and I need to build a press that will apply 600 tons of force to an object. Can I have one 300 ton cylinder on each end of the object? Or is this tonnage not additive.
  17. M

    Applied Trigonometry, Deduce Length of Segment in new triangle.

    Homework Statement When the sun is 74° above the horizontal a vertical flag pole casts an 8.5m shadow on the horizontal. Find the shadow cast when the sun lowers to 62° above the horizontal. Homework Equations The Attempt at a Solution I drew the following diagram...
  18. A

    Help applied problem max & min

    Homework Statement A wire that is 7 feet long is to be used to form a square and a circle. How much of the wire should be used for the square and how much for the circle to enclose the maximum area? Possible Solutions: a. o feet for the square and 7 feet for the circle b. pi/7 feet for...
  19. A

    Help Min & max applied problems

    Homework Statement An open box with a square base is to be constructed from 3 square feet of material. What dimensions will produce a box with maximun volume? Homework Equations v = l * w * h The Attempt at a Solution any other formulas involved.. ? help... and thanx!
  20. A

    Help applied probem - max & min

    1. A drug that stimulates reproduction is introduced into a colony of bacteria. After t minutes, the number of bacteria is given approximately by N() = 1500 + 12t^2 - t^3, 0≤t≤50 At what value of t is the number of bacteria maximal? 2. Possible answers a. 10min b. 9min c.8min d.0min...
  21. A

    Which elective on applied physics? Optics vs Material Science

    I am pursuing my Bsc in Physics. I am still in sophomore year. This semester and next year I am intending to take some applied physics courses as electives. I got choices for Junior level electives, which are: -Optics: covers geometrical optics, interference, diffraction etc. -Fiber...
  22. X

    Applied for the SMART scholarship

    So, I've applied for the SMART scholarship (DoD), the SULI program (DoE), Johns Hopkins APL, and now I want to apply to a few REUs (NSF). But, I have a couple questions: 1. Are there any REU's that do not require letters of recommendation? 2. Is it inadvisable to ask a professor to write a...
  23. D

    Atwoods - applied force - reduced acceleration

    Homework Statement Suppose that in the same Atwood setup another string is attached to the bottom of m1 and a constant force f is applied, retarding the upward motion of m1. If m1 = 6.45 kg and m2 = 11.90 kg, what value of f will reduce the acceleration of the system by 59%? Homework...
  24. K

    Math What are some career options for an Applied Math B.A. graduate?

    Obviously the job market is tough for everyone right now, but I was wondering whether anyone might have some guidance for me. I graduated in May 2010 with a B.A. in Math with an Applied concentration from a midwestern liberal arts college. My grades were pretty decent, but I got a few B+'s in...
  25. A

    Sodium Iodide Detector (NaI) FWHM and applied Voltage

    Hi! I have a question regarding the applied voltage on NaI(Tl) detectors, how does the voltage effect the FWHM ( energy resolution)? For example, in a HPGe detector, the higher the applied voltage ( to some extent because of the leakage current) the more electron and holes are collected...
  26. M

    How does Applied Physics and Electrical Engineering differ?

    I'm torn between several areas: Optics, Materials Science, and Physics. Academically does Applied Physics and EE differ at all in the interests I have? I need to talk to an adviser but I'm thinking of majoring in EE or Physics then taking every elective I can from the other department. I...
  27. C

    Programs B.S. in Applied Math to grad degree in physics

    I'm currently a senior at the Coast Guard Academy (graduating in May). My degree is in Applied Math (specifically Operations Research) but am looking to get a grad degree in physics or applied physics in a few years. What courses am I missing to A. get into a physics grad program and B. have...
  28. H

    Math Exploring Applied Math MS/PhD Jobs: Roles, Industries, and Personal Experiences

    Many schools advertise their applied math graduate programs by answering the question "what kind of job does a mathematician do?" The answers all essentially say the same thing--something like "you can teach, work for a government agency, or work in industry." They are very bad at explaining...
  29. C

    What to learn in pure math for applied math?

    So I finished my undergrad last year in applied math and physics. I'm currently applying to applied math phD programs (but they are separate depts from the pure math depts). I don't exactly what I want to focus on, but I was thinking something in mathematical physics, PDEs, functional analysis...
  30. D

    What torque must be applied to this flywheel?

    Here is the problem: A chainsaw is started by pulling on a rope that is attached to a solid steel flywheel. Assume that the wheel has a mass of 1.5 kg that is completely distributed along the outside edge, and it has a diameter of 10 cm. It starts at rest and must accelerate to 4.0 rev/s in 2.0...
  31. P

    Physics Outsourcing- less for (applied) physicists?

    I heard somewhere that companies are more likely to outsource engineers than people with physics/math degrees (on the masters level obviously), since the latter is more 'versatile' and adapts easier- this is totally illogical in my mind. In an industry job, don't engineers and physicists have...
  32. L

    Saint Venant's principle applied to ring

    Homework Statement An originally complete ring made of linear elastic material (Young's modulus, E and Poisson's ratio, v) is cut by a saw. A gap, delta, is generated by a pair of forces, P. Determine this force, P. (Use Saint Venant's principle) Inner radius of ring, a. Outer radius, b...
  33. S

    BA or BS - Physics or Applied Physics

    I've been looking at various majors recently and noticed that my school offers a BA and a BS in physics, and a BS in applied physics. Looking at the course list I can see that there are more physics and math classes for the BS (6-8), while the BA only requires you to take 3 or 4 actual physics...
  34. planethunter

    EE & Applied Physics: Is There a Connection?

    Is applied physics essentially electrical engineering?
  35. D

    Interpretation of power rule for integration applied to 1/x

    We all know \int \frac{1}{x} dx = ln(x) + c but if you try to apply the power rule for integration: \int x^n dx = \frac{x^{n+1}}{n+1} + c you get \int x^{-1} dx = \frac{x^0}{0} What can you learn from this/what does this mean? David
  36. A

    Optimization ( Applied Max and Minimum )

    Homework Statement From a square piece of cardboard, 30 cm on each side, an open topped box is to be constructed by cutting the squares from the corners and turning up the sides. What are the dimensions of the box of largest volume? The Attempt at a Solution I know how to do...
  37. Jadaav

    When calculating the amount of work done, using the force applied and

    When calculating the amount of work done, using the force applied and the displacement, does the weight of the object do anything ?
  38. J

    Calculating Work Done: 25lb Force at 60 Degrees on Object - Find Distance Moved

    an applied force of 25lb acts on an object at an angle of 60 degrees with respect to the direction of its motion. if the work done by this force on the object is 125ft-lb,then what distance did it move while this work was done a- 5ft b- 10ft c-15ft d-20ft e-25ft
  39. T

    What is the net torque given the angles of applied forces

    1. STATEMENT Calculate the net torque about a fixed pointfor 2 different forces given the angles of the applied forces. 2. MY QUESTION what is the net force, meaning how do i fint it? and what do i do wit the information given? Do i use T=r x F...
  40. L

    Decreasing Temperature at Point (3,1) Using Gradient Vector - Homework Problem

    Homework Statement The equation T(x,y) = x2y-y2 + 180 is a temperature equation at point (x,y). If One is standing at point (3,1), what direction should he move in order to decrease the temperature? Secondly, if one moves a unit distance in this direction found above, how much should...
  41. morrobay

    Newtons Law of Cooling applied to hot Neon and Hydrogen gas

    Homework Statement 1 mole of Hydrogen gas at 300 Kevin is contained in a thin walled copper container. In container #2 there is 1 mole of Neon gas also at 300 Kevin. The volume= 22.4 liters and surface area ,A = .476 m^2 The surroundings are at 100 deg Kelvin. The specific heat of H2= 5...
  42. H

    Finding Applied force given Mass and Kinetic and Static coefficients.

    Homework Statement Your family just had anew refrigerator delivered. The delivery man has left and you realize that the refrigerator is not quite in the right position, so you plan to move it several centimeters. If the refrigerator has a mass of 180 kg, the coefficient of kinetic friction...
  43. H

    Net Force on 5kg Suitcase and Applied Force Calculation

    Homework Statement What is the net force acting on a 5kg suitcase when picked up with 60N of force? what is the applied force? What is the acceleration of the suitcase? Homework Equations ma=? The Attempt at a Solution I'm not even sure on how to start the equation all I know...
  44. S

    Derivative applied to a ladder

    Homework Statement A 10 - foot ladder is placed against a vertical wall. The bottom of the ladder slides away from the wall at a constant rate of 2.9 ft/s. How fast is the top of the ladder sliding down the wall when the top of the ladder is 7.6 feet from the ground? Solution: Let the...
  45. T

    Mousetrap Racer - Applied Forces

    Homework Statement "Suggest a way of testing Newton’s Law by altering the force applied to your mousetrap racer." Basically, what the question is asking for is a suggestion for a way of testing Newton’s 2nd law by varying the force on the racer. Homework Equations The Attempt at a Solution...
  46. P

    Applied Force/Force of friction

    A crate has a mass of 24 kg. What applied force is required to produce an acceleration of 3m/s^2 if the frictional force is 90 N?
  47. S

    Chain rule derivative applied to an ice cube

    Homework Statement A cubical block of ice is melting in such a way that each edge decreases steadily by 9.8 cm every hour. At what rate is its volume decreasing when each edge is 10 meters long? Homework Equations V(t) = (l(t))^3 m^3 l'(t) = 0.098 m/h The Attempt at a Solution...
  48. D

    Determine average force applied by glove to baseball

    Homework Statement A 0.15 kg baseball is pitched with a speed of 23 m/s. When the ball hits the catcher's glove the glove moves back by 0.044 m as it stops the ball. Assuming a constant acceleration of the ball, what was the average force applied by the catcher's glove? Homework Equations p...
  49. J

    Tension of string when an impulse is applied

    Homework Statement A particle A (mass m1) is suspended under ceiling by a light string of length L1. Another light string length L2 is connected to A at one end and connected to particle B(mass m2). They are stable under gravbity at first. Suddenly a horizontal strike is given to A and A has...
  50. S

    Internships for Applied Physics Majors in CT?

    My school has a neat internship program where they will pay a stipend for the summer if you can find an "internship" somewhere related to your career goals. The nice thing is that it doesn't even have to be a real internship--all that you need is some place willing to let you work for them...
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