Applied Definition and 1000 Threads

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. 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...
  2. A

    Applied friction point between two disks

    Homework Statement Okay, so I have a homework-like question that I need help with. It seems so simple, but I'm stumped and can't find anything online. A similar real world example if my description below isn't clear would be a clutch mechanism where one disk is pressed up against another and...
  3. L

    Conservation of linear momentum applied to rotating systems? (with picture)

    Homework Statement I've encountered problems like this: A bullet with velocity v strikes a stick (intially at rest) at a distance d from the center of mass, then the bullet sticks to it, and the bullet-stick system rotates about the center of mass. But they ask me to find weird things like the...
  4. K

    Is My Applied Mathematics Curriculum Adequate for Industry and PhD Paths?

    Hello all, I *finally* have my studies decided for the next 2.5 years, and I am looking for some advice from either applied mathematicians or those who work in a related field (content specialization does not matter). I'm entering into a graduate mathematics program (officially Fall 2012...
  5. P

    Calculate Skateboard Force & Friction: 2.6x10^-2 & 1.2x10^-2N

    Homework Statement A 0.50 kg skateboard is at rest on a rough, level floor on which two lines have been drawn 1.0 m apart. A constant horizontal force is applied to the skateboard at the beginning of the interval, and is removed at the end. The skateboard takes 8.5 s to travel the 1.0 m...
  6. H

    AC Applied to a capacitor and dielectric effects?

    Hi all, An electrolytic capacitor has 2 AC sources connected to it, 1 at each plate. The AC sources are 180 degrees out of phase and have a high impedance which limits current in the nA range. Even though each plate should have AC on it which is 180 out of phase the voltage at each plate...
  7. Z

    Reversed bias diode with applied voltage

    hi there i just have a question about diodes say for example we have the following cct: the circuit with the diodes with the 5V supply, one of the diodes is on and the other off and i understand why this happens but when dealing with the circuit the opamp and the diode i am confused. the...
  8. maverick280857

    Dirac Principle Value Identity applied to Propagators

    Hi, How is \frac{1}{\displaystyle{\not}{P}-m+i\epsilon}-\frac{1}{\displaystyle{\not}{P}-m-i\epsilon} = \frac{2\pi}{i}(\displaystyle{\not}{P}+m)\delta(P^2-m^2) ? This is equation (4-91) of Itzykson and Zuber (page 189). I know that \frac{1}{x\mp i\epsilon} =...
  9. N

    Applied Seismology ebook _ finding

    Hello everyone, I'm finding Applied Seismology (a comprehensive guide to seismic theory and application) ebook of Mamdouh R. Gadallah... Please help me... I'm really appreciate about that... Thank you and wish all have nice time!
  10. E

    How Do You Minimize Cost While Building a Rectangular Enclosure?

    The manager of a department store wants to build a 600 square foot rectangular enclosure on the store's parking lot in order to display some equipment. Three sides of the enclosure will be built of redwood fencing at a cost of $7 per running foot. The fourth side will be built of cement blocks...
  11. D

    Applied Physics Job Opportunities?

    I am a high school senior, and currently trying to figure out what to do next as far as my education goes. I'm very interested in Physics, as I love learning how the things I often take for granted work. A school I applied for has not only Physics, but also Applied Physics. Are the job...
  12. M

    Calculate the force applied and constant frictional force opposing its motion

    A 0.50kg skateboard is at rest on a rough, level floor on which two lines have been drawn 1.0m apart. A constant horizontal force is applied to the shateboard at the beginning of the interval, and is removed at the end. The skateboard takes 8.5s to travel the 1.0m distance, and it then coasts...
  13. W

    How to Maximize the Volume of a Cone Inside a Sphere?

    Homework Statement Find the volume of the largest right circular cone that can be inscribed in a sphere of radius 3. Homework Equations V=π*r^2*h/3 A=πr^2 + πrl The Attempt at a Solution I did multiple things that I'm not sure are correct. I took the derivative for the volume with the value of...
  14. S

    Friction compared to applied force

    Homework Statement I am doing review questions about friction and am I little confused about the one I am currently doing. I have an idea of what the answer is but i want to be positive. The question asks to compare friction to applied force of an object on a horzontal surface. Compare...
  15. D

    Applied Functional Analysis by Zeidler

    "Applied Functional Analysis" by Zeidler In my book, "Applied Functional Analysis" by Zeidler, there's a question in the first chapter which, unless I got my concept of density wrong, I can't seem to see true : Let X=C[a,b] be the space of continuous functions on [a,b] with maximum norm. Then...
  16. S

    Applied Combinatorics what is it about?

    I'm a math major, and am planning on taking Applied Combinatorics next semester for an upper level requirement. I've looked it up, but still don't have a clear idea about what the course is about exactly. Also, is it considered a hard course?
  17. E

    Math How marketable is a BS in Applied Mathematics degree?

    Out of curiosity, what jobs could someone with a BS in applied mathematics apply for with a reasonable chance of getting? Additional skillsets would be programming... Thank you!
  18. P

    Choosing Between Math and Applied Math: A Physics Major's Perspective

    I'm a physics major, but I want to do a dual major in either Math or Applied math. Basically the requirements are almost the same, except applied math requires one less and two more courses than the math major. I'd be taking the same electives either way (ODE, PDE, Linear Algebra, complex...
  19. K

    Programs Electives for an Applied Physics degree

    So as my first year of undergraduate Applied Physics comes to a close I have to start picking electives for next year. I have two options, I can either do 'bludgy' subjects so I can focus more on my core subjects and hence get better marks in them, or I can do a sub major which would probably...
  20. Geofleur

    2D Gauss' Law applied to an infinite cylinder

    Hello, I've been working my way through Mathematics for Physicists by Dennery and Krzywicki and, on page 65, they assert that Gauss' law applied to a 2D cross-section along an infinite charged cylinder is: ∫E.n dl = 4πσ where E is the electric field on the Gauss surface (a circle around...
  21. D

    Any Applied Math Graduates here?

    Hello, I'm looking for some people who received their bachelor's in Applied Mathematics to answer a few questions. Any responses are greatly appreciated. Thanks!
  22. P

    Applied math problem - Law of Mass Action

    Homework Statement 3.3. The equations below come from applying the Law of Mass Action to two reactions. X' = aXY, Y' = bYZ + cZ, Z' = dYZ + eZ. (a) Find the two reactions and determine how the coefficients a, b, c, d are related to each other, if at all. Assume a, b, c, d, e are nonzero, but...
  23. P

    Can someone please tell me what applied uses surds have in Science?

    Can someone please tell me what applied uses surds have in Science? Apart from Pythagoras? Cheers, Mick
  24. S

    Is Any Applied Force Truly a Normal Force?

    THIS IS THE QUESTION: Your teacher says, “Any applied force can also be called a normal force.” Discuss the validity of this statement. Thanks guys.
  25. D

    Engineering Engineering or Applied Math for Grad School

    I'm a mechanical engineering and math double major in my last year of undergrad and planning on going to grad school next year. My question: Given that I want to work in industry/the private sector after grad school, how do masters degrees in applied mathematics stack up to masters degrees in...
  26. P

    How much force is needed to tip a box with given dimensions and weight?

    Homework Statement Hello, its been a long time since I've worked with statics or dynamics in college and now find myself in the workfield trying to figure out a current problem! What I am looking for is how much force is needed to tip a box. The box i have has dimensions of: Length=400in...
  27. V

    Basic question regarding applied voltage and circuits

    So, in a physics lab I TA, we are doing a lab in which part of it, the students try to do Faraday's Ice Pail experiment. For part of it, they need to charge a piece of metal at the end of a insulating rod. To do this, the guy who designed the lab did the following. He has a voltage supply...
  28. 1

    Math professors thoughts on pure vs applied

    Paraphrased something like (this is an early proof based class) "I hear engineering majors and physics majors say that they like math as long as it can applied to something. So these folks won't take any upper level pure mathematics courses. It's useless. Is it? Did you know that (something...
  29. U

    Solving Box Motion with Applied Force

    Homework Statement A 3.10 box is moving to the right with speed 8.50 on a horizontal, frictionless surface. At t=0, a horizontal force is applied to the box. The force is directed to the left and has magnitude F(t)= (6.00 N/s^2)t^2 What distance does the box move from its position at...
  30. 1

    Relationship of applied load against beam surface strain

    Homework Statement I am working with an electronic bathroom scale and now have to find the relationship of the applied load which is mass in kg against the beam surface strain. The maximum load is assumed to be 75 kg. Homework Equations (M/I)(h/2)=Eε A picture of the beam has been...
  31. T

    2 blocks on top of each other, applied force, friction, and tension

    Homework Statement A 4.32 kg block is placed on top of a 9.16 kg block. A horizontal force of F = 66.6 N is applied to the 9.16 kg block, and the 4.32 kg block is tied to the wall. The coefficient of kinetic friction between all moving surfaces is 0.169. There is friction both between the...
  32. T

    Applied mathematics, electrical engineering, or both

    I'm starting my second year at school, and knowing that I will have to declare my major soon I'm torn between the possible choices. Officially, I am in the engineering program but I took a lot of extra credits in math last year since it interests me so doing the double major program in...
  33. T

    Applied mathematics, electrical engineering, or both?

    I'm starting my second year at school, and knowing that I will have to declare my major soon I'm torn between the possible choices. Officially, I am in the engineering program but I took a lot of extra credits in math last year since it interests me so doing the double major program in...
  34. T

    Programs Which applied math phd program to apply to?

    Hi guys, I am trying to figure out what Applied Math PhD programs I should I apply to this fall. My main interests are in computational science, specifically numerical methods and stochastic methods. My profile is as follow: Undergrad: big state school, solid reputation in math Major...
  35. B

    Torque is applied to a steering wheel of an automobile

    (Q) What torque is applied to a steering wheel of an automobile when the driver applies a force of 50 Newtons tangent to the circumference of the wheel? Diameter of the steering wheel is 40 cm. F = 50 N D (torque arm) = 0.40m T= Fd = 20 N... but its wrong... any ideas...
  36. N

    Friction force applied at an unknown angle to horrizontal plane

    Homework Statement im having problems with this question...a body weighing 51kg is pulled on a horrizontal plane with coefficient of friction 0.3. a force of 300N is applied at angle x ... find the angle x? Homework Equations The Attempt at a Solution the only solution i hav come...
  37. D

    Force applied perpendicular to velocity, kinetic or static friction?

    The other day, we were discussing cars going through turns and the max speed they could do without slipping. My teacher asked us if static or kinetic friction should be used. I answered static, because the wheels are rotating and thus not sliding over the road surface. He ended up saying the...
  38. P

    What is the water level above the orifice as time goes to infinity?

    Homework Statement A tank with vertical sides has a square cross-section of area 4 ft2. Water is leaving the tank through an orifice of area 5/3 in2. Water also flows into the tank at the rate of 100 in3/s. Show that the water level approaches the value (25/24)2 ft above the orifice.Homework...
  39. C

    How far does the car travel before its brakes are applied to slow down?

    Two cars start from rest at a red stop light. When the light turns green, both cars accelerate forward. The blue car accelerates uniformly at a rate of 5 m/s2 for 4.3 seconds. It then continues at a constant speed for 9.7 seconds, before applying the brakes such that the car’s speed decreases...
  40. S

    Why Use the Average Earth-Sun Distance in Stefan's Law for Energy Conservation?

    I am trying to understand an example in my Modern Physics textbook (Example 3.1, page 5 in thishttp://phy240.ahepl.org/Chp3-QT-of-Light-Serway.pdf" or pg 69 using the book numbering) I don't understand why the average earth-sun distance is being used in the conservation of energy equation...
  41. S

    Thermostatic applied on electronic chip

    Hi everybody I am an electronic engineer and I have a question concerning thermostatic behaviour of an electronic component. I have a printed circuit board (PCB) with electronic chips on it. At room temperature 25°C I measure with the infrared themometer the case temperature of one...
  42. X

    Can You Combine Pure and Applied Mathematics in Your Studies?

    Hi, I am applying in college this year, and I consider to major in mathematics. My desire is to understand the actual beauty of math, as well as its application. Therefore, I consider between Pure math and applied mathematics. Is it good to pursue in both branches? and How long it would take me...
  43. V

    Ring with radial force applied

    I have attached a figure with this, to help in understanding the problem. A ring whose circumference is attached to its center by infinite springs. Center is fixed. thickness of ring is h, width is b, Young's modulus E and moment of area I. Now a radial force is applied(shown in the figure...
  44. D

    Rotational Inertia: Front end of an airborn bike drops when brake is applied

    So every mountain biker or motocross rider knows to never grab the front brake in the air. When you do the front end drops and can potentially ruin your day in a hurry. I figure that due to the loss of rotational inertia gravity accelerates the front wheel more rapidly, but I would like to see...
  45. amarante

    Fluorescent/fosforescent effect applied to engineering

    Hello all, I have to prepare a seminar about fluorescent/fosforescent effect applied to engineering. Besides fluorescent lamps, and some advertisements for security. What would you suggest? Mainly in the electrical engineering area. Thanks in advance, Joao A.
  46. S

    Math Will I be able to get a job with just an applied math BS?

    I am quite certain I will not be going for a PhD, and after doing some research most job postings seem to be looking for PhD's in math. I am in my second year doing this applied mathematics degree, (It is actually even more focused "Computational Mathematics") but if my job prospects are...
  47. D

    Two blocks with spring (no friction), force applied: displacement?

    Homework Statement A 2kg block & 3kg block (left & right, respectively) are on a horizontal frictionless surface connected by a spring with K=140 N/m. A 15N force is applied to the 3kg block towards the right. How much does the spring stretch from its equilibrium length? Homework...
  48. A

    Applied Linear Algebra problem

    the question: the matrix 1 -1 1 -1 has the property that A2 = 0. Is it possible for a nonzero symmetric 2x2 matrix to have this property? Prove your answer. my work: for a 2x2 matrix A to be its own inverse, it has to have the form a b b a This squared...
  49. A

    Linear Algebra (applied) question

    "Find all solutions to the augmented system" 1 2 0 3 1 ||-2 0 0 1 2 4 || 5 0 0 0 0 0 || 0 0 0 0 0 0 || 0 We just learned transposes and matrix multiplication (after a few sections on solving linear systems of equations -- via triangular matrices...
  50. D

    What are some tips for understanding and applying higher level math concepts?

    Hello all, I'm a guy who's bad at maths. I intended to study something easy - like law, history and the like. But I made a last second decision and chose to study something more useful - applied maths in my case. What I'd like to know, is what math subjects should I improve at (if I don't want...
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