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. T

    COMSOL: Problem about optimization applied to a laminar flow

    Hi all,i'm new here and i really hope that you could help me with this problem that is blocking the progression of my graduation thesis. I'm working on a 3D stationary simulation of brachiocefalic artery; I'm using laminar flow physics with a known velocity in inlet and a normal stress in...
  2. S

    Courses Should I take more theoretical courses or applied courses?

    Hi. I am a math major that got started late. I started taking prerequisites during my sophomore year (which I'm finishing this year). I'll be taking some courses in algebra and analysis next year. There are some courses that can fulfill my major requirements, but some are theoretical and some...
  3. A

    How Do You Solve Particle Motion and Collision Problems in Physics?

    (a) A particle of mass 4 kg moves under a force: F = 6t^2i - tj - 4k in Newtons. Assuming that the particle is initially at the origin with velocity v = i + k in m/s, find its position after 1s. (b) A ball of mass m travels with velocity 3 m/s and collides with a second ball with mass 2m at...
  4. B

    AC magnetic field applied to a superconductor, London Theory

    Hey all, I'm just working through the london theory of superconductors. I've dervied the london penetration depth, the distance for the amplitude to drop by a factor of 1/e... Seems simple... Now my book talks about applying a an ac magnetic field to a superconductor. How would the field...
  5. A

    Doppler Shift as Applied to Nuclear Structure and Spectroscopy

    Homework Statement a) Calculate the Doppler shift due to a relative velocity of 3cm/sec. b) Fine \Delta E/E, where E = 14.4keV and \Delta E is the Doppler shift obtained in (a). Homework Equations \frac{f_{0}}{f_{s}}=\frac{c}{c+v_{s}} The Attempt at a Solution So I'm working on...
  6. J

    Help Finding the Applied Force to move a box?

    Homework Statement A certain force moves a 4-kg box from rest to a velocity of 6 m/s in 3 seconds. If the coefficient of friction between the box and the floor is 0.05, what is the magnitude of the force? Given/Known: mass = 4 kg μ (I'm assuming it means kinetic friction?) = 0.05 time = 3...
  7. fluidistic

    Electrostatics, force applied on a charge

    Homework Statement First of all, in order to avoid any confusion, let me precise that I use Gaussian units. I.e. k=1 rather than \frac{1}{4\pi \varepsilon _0}. An infinite conductor plane is kept at a potential worth 0. A point-like charge can be found at a distance d from the plane. Using the...
  8. X

    Physics Jobs for someone with a Bachelors in Applied Physics

    Hello all! I will be getting my bachelors in applied physics by this time next year and I was wondering what types of jobs are open to someone with such a degree? I am studying physics, not for financial ease, but simply because I truly love physics. So I am ignorant in the job a Physics...
  9. A

    No idea how to find applied forced based on kinetic friction and acceleration.

    Homework Statement A 10.0kg box is accelerated from rest to 4.00 m/s in 1.00s. The force of kinetic friction on the box is 5.00N. A) What is the size of the applied force? B)What is the coefficient of sliding friction? Homework Equations The five kinematic equations? μ = Ff/Fn Fn=...
  10. R

    The Slope of a Normal Force vs Applied Force Graph

    Homework Statement An experiment was conducted where a slider with different mass combination is placed on a board. A Newton spring scale is attached to the slider and is pulled horizontally and parallel to the board such that the slider moves at a constant velocity. The applied force...
  11. grav-universe

    Applied Momentum: Calculating Local Momentum from Rest Frame Speed

    Let's say that a ship makes small jumps in speed with a momentum measured by the ship observers as p each time. The first jump from the rest frame brings them to a speed of v. They continue to do this n times, so the the total momentum applied locally according to them is n * p, right? After n...
  12. A

    Pivoted rod - impulse applied so no horizontal force on pivot

    Homework Statement There is a rod of length L pivoted on one end. It is originally at rest horizontally then released. When vertical, an impulse is applied to bring the rod to rest. Throughout the question I have worked out I = 1/3 mL^2 w= √(3g/L) at the vertical position and an...
  13. J

    Finding Applied Force with Free Body Diagrams (Grade 12 Physics)

    Homework Statement You have a 10kg object that is thrown down a building. The distance from the ground to the building is 50m. The initial velocity of the object is 5 m/s. What is the applied force and what force does the object hit the ground with? Homework Equations Fapp= Fnet+Fg...
  14. S

    Fano plane concept applied to lottery combinatorics

    I came across an interesting combinatorics optimisation description for 14numbers. Maybe someone good in combinatorics can expand this fano plane concept to a full 45 numbers lottery design. Any suggestions? http://en.wikipedia.org/wiki/Transylvania_lottery
  15. J

    Newton's Laws Finding Applied Force and other Forces

    1. Sean the skier is headed for a rough patch of snow with the coeffcient of friction 0.20. Find his acceleration if his mass is 50 kg. 2. F=ma, coeffcient of friction=Ff/Fn 3. Fgravity = 490.5 using the equation coeffcient of friction=Ff/Fn we get 0.20 = Ff/490.5 which equals Ff = 98.1 This is...
  16. L

    This may sound silly but why did I not get accepted to the REUs I applied for?

    Ok, I applied for 10 chemistry REUs this year. I have only heard back from a couple of them so far, but both were rejections. Now, obviously I still have a lot of opportunity to get a different one, but right I'm just sitting here wondering why I wasn't accepted. Going into senior year 4.0...
  17. P

    Calculating Applied Torque for a Grinding Wheel

    Homework Statement A grinding wheel is a uniform cylinder with a radius of 10.0 cm and a mass of 0.570 kg. Calculate its moment of inertia about its center. 2.85 x 10^-3 kg * m^2 Calculate the applied torque needed to accelerate it from rest to 1700 rpm in 4.80s if it is known to...
  18. R

    Physics Would switching to Applied Physics be a good idea?

    Hello physics forums! Looking for some informed input on this subject as many of you are involved in job searches (or maybe you do the hiring) or have been involved and have a better idea of what goes on out there in the real world then I do. Right now I have a junior Physics major, and my...
  19. J

    Mechanical vibrations, force applied to the armature

    Homework Statement FYI - I don't have any knowledge on the mechanical aspects of electric motors. you're given a 400 hp electric motor that needs to run at varying rpms. The armature is 1200 lbs and is 800mm long with a diameter of 500 mm. the air gap that exists is 2.5 mm. At 800 rpm the air...
  20. W

    What is the Average Force Required to Climb a Slope at Constant Speed?

    Homework Statement a 79kg mass can slide down a slope of 57 degrees at a constant speed of 12km/h/ how much average force must be abpplied to climb the hill at the same speed? Homework Equations Ef=ma Ef=Fapp-FgsinthetaThe Attempt at a Solution ...ughm... kinda don't know how to start...
  21. R

    Physics Exploring Career Paths for Applied Math & Quantum Mechanics Majors

    I'm a 2nd year physics major thinking about switching to applied math with a concentration in quantum mechanics. I was wondering if anyone knew any possible career paths that could arise from this degree, and also if a career in a more econ/finance/business related field would be a viable...
  22. M

    Applied Mechanics PhD - Job prospects?

    Hi, Prospective physics undergraduate. Interested in topics of applied mechanics - fluids, dynamical systems, biomechanics, etc. "How fish swim?" or "How bubbles go pop?" are questions I find myself interested in. Not saying I don't like fundamental physics, just that I am interested in such...
  23. C

    Calculating Rotational Energy of Disk After Forces Applied

    Homework Statement A uniform disk with mass m = 9.32 kg and radius R = 1.37 m lies in the x-y plane and centered at the origin. Three forces act in the +y-direction on the disk: 1) a force 340 N at the edge of the disk on the +x-axis, 2) a force 340 N at the edge of the disk on the –y-axis...
  24. W

    Box on an inclined surface with Force of Friction and angled applied Force.

    Incline Surface force deleted
  25. MathWarrior

    Where to specalize in Applied Mathematics?

    I am currently enrolled to become a Applied Mathematics major, the school I will be going to has a relatively small number of classes for upper division math so I am thinking I should try and specialize in something. Even though their is a limited amount of courses to choose from being as the...
  26. E

    Newton's Laws, Finding Correct Acceleration and Applied Force

    Homework Statement John (mass = 80 kg) rests on the top face of a light cube (mass = 0). A light rope passes horizontally from him over the front edge, and vertically down to Brian (mass = 60 kg) who hangs in contact with the front face as shown. The cube rests on a horizontal surface and...
  27. A

    Difference between Engineering Physics and Applied Physics

    What's the difference betweeen the 2 degrees, does any school offer both degrees?
  28. M

    Which Linear Algebra Course Should I Choose for Grad School Prep?

    I have to register for Fall classes in the next few days, and my advisor is not responding to emails, so I figured I would ask this question here. I am pursuing a Mathematics BS, and have the choice to take either Linear Algebra or Applied Linear Algebra. I initially was going to take Linear...
  29. T

    Poisson's equation applied to an integral

    This is not a homework problem, but a math question of curiosity. At 57 I am way past courses and homework. If a potential, V, is expressed as a volume integral, how does one apply Poisson's equation to that integral? If V = k∫V'\frac{ρ}{R}dv' (V on the LHS is voltage and the integral on...
  30. K

    Electric Charge Distribution in Cylindrical Capacitors

    Homework Statement A potential difference of 160V is applied across two col-linear conducting cylinders. the radius of the outer cylinder is 15 cm, the radius of the inner cylinder is 10 cm, the height of the two cylinders is 38 cm. a. How much charge is applied to each of the cylinders? b...
  31. K

    Applied force increase/decrease kinetic energy

    Homework Statement 1. Under what conditions would an applied force increase the kinetic energy of an object? 2. Under what conditions would an applied force decrease the kinetic energy of an object? 3. What would the Force vs Distance graph look like for a cart on a track connected to...
  32. C

    A box slides on top of a cart as a force is applied to the cart

    Homework Statement A box of mass = 20 kg rests on top of a cart mass = 30 kg. A force of 200 N is applied to the cart, and the box starts to slide. If the coefficient of kinetic friction is 0.25, what is the time it takes for the box to slide 1.5 m. Both the cart and the box start from...
  33. J

    Finding the Force Applied to a Partner Swinging at 4.25 m/s

    Homework Statement In the figure the man hanging upside down is holding a partner who weighs 570 N. Assume that the partner moves on a circle that has a radius of 6.50 m. At a swinging speed of 4.25 m/s, what force must the man apply to his partner in the straight-down position? Homework...
  34. S

    Lorentz Law field equation applied in a field

    Homework Statement An electron is traveling at 5.0 × 106 m s−1 directly into the page at the point P shown in Figure 3. P is 4.0 cm from O. Again, D = 10 cm and the current i in each wire has magnitude of 1.0 A with the directions that you found in part (c). Find the magnitude and direction of...
  35. D

    ELO chess ranking system applied incorrectly in video games

    Are there any chess players, statisticians, or smart people who are familiar with the ELO ranking system? This concerns a game with at least over 100,000 players, so its not an obscure concern. Basically, I play an online video game that tries to apply an ELO ranking system to rank...
  36. H

    Programs BS Applied Math+CS Minor+MFE vs. BS Applied Math+PhD Applied Math

    I'm still debating my paths of 1) a B. S. in Applied Mathematics with a minor in something computer related (heavily programming-focused, but I don't think I can take something like software engineering as a minor and I don't think I can handle a double major of mathematics and engineering...
  37. T

    Calculating Load Applied to Anchors Holding a Car in River

    Hi I am trying to work out the load applied to some anchors used to hold a car stationary in a man made river channel. I know it will be something to do with the surface area and the speed/volume of water. Can anyone help, admittedly I am a practical person not a acaedamic so layman terms...
  38. I

    Math MsC in applied physics or mathematics?

    I'm an undergrad student in engineering with no work experience and limited knowledge about what's to come after I finish my studies. I still have a lot of time to decide, over 1 year more or less. Up until now I've been interested and fascinated by applied physics. More specifically...
  39. K

    F=ma applied to slider crank piston motion

    I'm struggling to apply F=ma to the motion of a slider crank, more specifically the piston. I want to find out how much force is nessesary to keep the piston in motion. Essentially, in the mechanism there is acceleration and deceleration, does that mean only at some points in the cycle there is...
  40. S

    Need Help with a Formula to convert Change in RPM to torque applied

    I need some help coming up with a formula.. This involves a Vehicles Engine I know how fast the rate of change is (example being 3000 rpm over 3 seconds-an increase from 3000rpm to 6000 rpm in that 3 second period) I know how much weight this RPM has moved (3700 lbs) and I know the Gear...
  41. MathWarrior

    MATLAB Bachelor's Applied Math - Should I buy MATLAB?

    I just was wondering, I am getting my bachelors in Applied Mathematics. Currently in differential equations, we use MATLAB quite a bit in this class. I know I will likely be taking 2-3 more classes where we use MATLAB should I buy a student copy? Would it have the features needed for undergrad...
  42. M

    Questions about harmonic analysis as applied to elasticity

    Hello everyone, I am trying to use a combination of a couple different types of harmonic potential formulations (attached - see question 2) to arrive at an analytic solution to a 3D linear elasticity problem. The problem involves a finite simply connected solid of revolution with mixed...
  43. N

    Underdamped Harmonic oscillator with applied force

    Homework Statement An underdamped harmonic oscillator with mass m, spring constant k, and damping resistance c is subject to an applied force F0cosωt. (a) [analytical] If, at t = 0, x = x0 and v = v0, what is x(t)? Homework Equations Ωinitial = √(k/m) The Attempt at a...
  44. G

    Applied Physics OR Physics OR Insert Better Option Here

    Hey, This is my first post on here, but I've been browsing PF for years now. I'm in a bit of a snag. I'm starting as a freshman in college this fall, and I'm not exactly sure what subject I can major in that will satisfy my interests. Basically I'm really interested in every field of...
  45. D

    Finding out applied force in order to get acceleration

    Homework Statement A person pushes a box across a horizontal floor with an initial velocity of 5.2m/s. The box has a mass of 22kg, and the coefficient of Kinetic friction between the box and the floor is 0.44. How far does the box slide before coming to rest? Homework Equations μk =...
  46. D

    Is an applied mathematics major marketable for a job?

    I originally wanted to major in chemical engineering, but I really like math more and I'm afraid I won't like my job as a chemical engineer even though I'm very good at the subjects so far. Is an applied mathematics major still as viable as an engineering field (which I hear is almost a...
  47. R

    Second BS in Eng or MS in Applied Math

    I started this topic in the career guidance thread but realized this is probably the thread where it should be. After graduating with my BS in Kinesiology I realized that I did not want to pursue a career in the field, they were too people oriented and not stimulating enough. So I'm at a...
  48. C

    Static Friction: Max Force Magnitude Applied?

    Homework Statement Which of the following statements are true about Fs, max in the equation mu=Fs, max/Fnormal? I. Fs, max is exerted perpendicular to the surfaces in contact. II. Fs, max represents the maximum value of the force of static friction. III. On a level surface, the magnitude of...
  49. L

    What is Applied Sciences in Engineering?

    Hey, Im trying to figure out which engineering I should do. I am doing a dual degree in physics and engineering. I am pretty much done with physics. I was going to do electrical engineering, but i don't think its right for me. I am thinking of doing civil engineering, but then i saw a degree in...
  50. F

    Does a Bicycle Require Less Torque to Maintain Speed Than to Start Moving?

    Hello Forum, let say we are on a bicycle at rest and in the lowest gear. We start pedaling and the bike moves. The applied torque on the rear wheel is equal the ground frictional torque and the bike moves forward by action reaction... Once we reach a certain speed on the bike, is the...
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