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. S

    Fixed Ended Beam applied to couple moment

    Homework Statement Hi, i am trying to understand how to find the reactions (Ra & Rb) and moments (Ma & Mb) of the beam shown in the sketch below. Not an exact number but in terms of Mo(couple moment) and L(length). Homework EquationsI have the answers which are Ra = -Rb = 3Mo /2L AND Ma...
  2. W

    3-2 B.S. in Applied Physics and Engineering

    Everyone on this website probably gets this question a lot, or something like it. But, I'm currently enrolled in a 3-2 program which allows you to get a B.S. in Applied Physics then a B.S. in your selected engineering field. The problem is Penn State, the school in which I would get my...
  3. A

    Math Applied Math PhD Industry Job Prospects

    Hi guys, I'm about to finish my Bachelor's in Mathematics and Statistics and am currently applying to PhD programs in Applied Math/Scientific Computing. My research interests are in PDEs, Numerical Analysis, and Fluid Dynamics. However, I am a little hesitant about proceeding because I'm...
  4. S

    Velocity change when an impulsive force is applied ?

    I was reading an article about velocity and displacement of a particle..It says "though the position of a particle is a continuous function of time,velocity sometimes isn't.For instance velocity is not continuous while an impulsive force is being applied." But I think that velocity changes...
  5. E

    Resolving Forces question applied force and friction force

    Homework Statement In earlier days, horses pulled barges down canals in the manner show in the figure below. Suppose that the horse pulls on the rope with a force of 7900N at an angle of 18 to the direction of motion of the barge, which is headed straight along the canal. The mass of the...
  6. S

    An applied force varies with position

    An applied force varies with position according to F = k1 xn− k2, where n = 3, k1 = 2.4 N/m3, and k2 = 56 N. How much work is done by this force on an object that moves from xi = 5.13 m to xf = 28.2 m? Answer in units of kJ i keep using the integration equation: w = ∫f(x) dx where k1x^4/4 - 56x...
  7. H

    Physics Which career path? Applied or theoretical physics?

    I am in the process of choosing the topic for my thesis. Originally I came from a more theoretical branch of physics but I realized that I do not see my future in university research, but more in the industry. I want to do research with more direct applications, but now I am not sure what my...
  8. J

    Predicting the distance where torque should be applied?

    Homework Statement Finding the mass of the meterstick! Distance was found through experimentation I am given a mass hanger of 50g to place on a 100cm ruler held up on its center of mass at 49.8cm I displace the clip holding the ruler by 15cm to the left. (assuming the ruler counts up from left...
  9. P

    Finding Applied Force at equilibrium

    1. A block with a mass of 6 kg is held in equilibrium on an inclined plane of angle θ=30 degrees by a horizontal force F. Find the magnitudes of normal force on the block and of F (ignore friction). So far, I've found Fg=6(-9.81)=-58.86 N I then found Fgy=-58.86(sin240)=50.97 and...
  10. mesa

    Calculating time/force applied on two blocks using coefficient of friction

    Homework Statement The coefficient of static friction between two blocks is .60. The coefficient of kinetic friction between the lower block and the floor is .20. If a horizonatal force is applied to the upper block (m=4kg) what is the minimum amount of time the two blocks (m=7kg) can cover...
  11. S

    Cantilever Beam Failure as a function of Force Applied to Free End

    Hello, First post, go easy. Trying to do some basic calculations on how to find when a steel cantilever beam will yield when a load is applied to the free end of the beam. I have attached my best MS Paint diagram of the problem. Assume the left end is clamped and essentially a fixed end...
  12. B

    Programs Can a Pure Math undergrad get into an Applied Math PhD program?

    I want to get my undergraduate in Pure math (I've taken and will take some additional CS courses). My question is, would I still be a competitive candidate for a PhD program in computational biology? (mathematical modelling of biological/behavioral/social systems) or should I really get my...
  13. G

    Math Applied math vs. statistics PhD - job prospects

    Applied math vs. statistics PhD -- job prospects I'm a math major considering pursuit of a PhD in applied math or stats when I graduate. I'm trying to ascertain the job prospects in these fields. Can anyone provide some information on how readily jobs are available in industry and academia in...
  14. D

    Lagrangian for Applied Torque on a Hoop with Bead

    Homework Statement I included the problem as an attachment. My difficulty lies within understanding how to account for the applied torque within the Lagrangian and subsequent Euler-Lagrange equations, which is what I want to use to determine the equations of motion of the bead on the hoop...
  15. J

    Sturm-Liouville theory applied to solve Helmholtz equation

    Homework Statement Find the eigenfunctions of the Helmholtz equation: \frac{d^2y}{dx^2}+k^2y = 0 with boundary conditions: y(0)=0 y'(L)=0 Homework Equations General Solution: y = Asin(kx) + Bcos(kx) The Attempt at a Solution I found that at y(0) that B=0 and that...
  16. J

    Average force applied by bullet

    Homework Statement What is the average force applied by a 75 g bullet that leaves a gun at 1350 m/s and hits a target 75m from the barrel of the gun? Homework Equations F = ma The Attempt at a Solution First I had the equation F = ma, and began filling in all the variables I could...
  17. K

    Magnetic moment due to applied external magnetic field

    Homework Statement How large externally applied magnetic filed (B_{0}) is necessary in otder for 51% of the metal ions in CuSO(_{4}) to have their magnetic moments oriented in the same direction as the applied field when the salt is kep at room temperature? Homework Equations B=\mu_{0}(H+M)...
  18. U

    Force applied to block moving along table

    Homework Statement An object of mass is placed at rest at the point x=0 on a horizontal table and at time t=0, a horizontal force is applied to it given by Fx = c1t where c1 is a known positive constant. The coefficient of friction between the table and the object is u. If friction force...
  19. C

    The fields of applied mathematics

    What kind of mathematical disciplines/fields take part in what's called "applied mathematics"? As far as I know, it's Differential Equations, Calculus, Statistics and Linear Algebra. What other fields are there? I'm sure there are some others.
  20. T

    Bachelor of Applied Sciences? Bachelor of Engineering?

    What are the differences, if there are any, between these degrees? By differences what I mean is what classes are different in obtaining one from the other? Why do some universities give one and not the other? What possible drawbacks are there between each degree in terms of future employment...
  21. P

    Applied Force on Superimposed Blocks

    1-kg Block 1 sits on 10-kg Block 2. Friction between the blocks is 0.4 static, 0.3 kinetic while the floor is frictionless. A 4-N force is exerted on Block 1. What is the acceleration of Block 2? I know Block 1 won't move relative to Block 2 since it is canceled out by the frictional force...
  22. D

    Torque on a current carrying coil with an applied frictional force?

    Homework Statement There's a diagram in my book but imagine a coil in a square shape attached to a vertical shaft, the diagram for convenience sake represents the coil as one circular wire exactly like a wire actually looks. However, the coil has 410 turns and has an area per turn of 3.1 X...
  23. F

    Special Relativity: Force applied to a bar

    Homework Statement Two forces of equal magnitude are applied simultaneously on the ends of a bar of length L. In another reference frame, moving with velocity v relative to the bar (with v being parallel to the length L), the forces are not applied at the same time, generating momentum. I...
  24. R

    Applied Force to a Sliding Frictionless Ramp

    Homework Statement Hello all, kinda angry at myself for posting this but my brain has hit a brick wall. This is an easy problem too... anyway. A frictioness ramp of mass M and incline θ sits on a frictionless surface. A block of mass m sits on the ramp. What horizontal force F must be applied...
  25. J

    Cable tension force from applied force

    Hi, I am a bit confused about cables, because of multiple people telling me different things. The only times we've discussed cables/springs is when a force is applied parallel to the length of the cable. So say you had a cable tied to 2 fixed ends ------------------ , (great diagram eh) and a...
  26. B

    Determine If Integral Test Can Be Applied

    Homework Statement I attached the infinite series the question provided as a file. Homework Equations The Attempt at a Solution I deduced the general term to be ln(n)/n, so the infinite series would be written as \sum_{n=2}^{\infty} \frac{\ln(n)}{n} I took the derivative of the...
  27. B

    Theorem in applied mathematics that relies on the axiom of choice

    Hi there, Im looking for a theorem that relies on the axiom of choice, but is used in applied mathematics (economics, physics, biology, whatever). In other words a mathematical theory we use to say something about the real world. This is because I'm wondering if discarding the axiom of...
  28. A

    Basic Force: Why to take force of friction from force applied y?

    Homework Statement A box of books weighing 319 N is shoved across the floor by a force of 485 N exerted downward at an angle of 35^degrees below the horizontal. a) If uk between the box and the floor is 0.57, how long does it take to move the box 4.00 m, starting from rest. b) If uk...
  29. 1

    Potential applied across two points with batteries

    Homework Statement attached Homework Equations The Attempt at a Solution The first two were pretty simple, but I'm having trouble grasping why my guess for #3 was actually correct. Why are we ignoring the parallel battery/resistor combo up top and just adding the voltages of the...
  30. S

    Finding the Force Applied to a Heavy Bag

    I have a heavy bag and I was wondering if I could find out how much force is applied when I kick it. Here's a picture describing of the problem: If some amount of force is applied that causes the bag to move x meters (first swing) in the direction of the force, how much was applied? The...
  31. S

    Calculating Reaction Force: Box on Rigid Wall with Applied Force of 100 N

    Imagine a box of mass "M" lying on a surface and attached to a rigid wall too. Assuming that the co-efficient of friction between them(box and surface of ground) is "μ". and I am applying a force of 100 N horizontally on the box. So my question is how mush force is being applied by the wall on...
  32. H

    First law of thermodynamics applied to Compression and Expansion

    How does the first law of thermodynamics apply to the Compression And expansion of a gas at constant temperature ? If the gas is at a constant temperature and is being compressed, then ΔQ = 0 ΔU = + W(on the system) = + Are those(^^) correct ? The equation being : ΔU = ΔQ +...
  33. T

    A parabolic force distribution is applied to a beam

    Homework Statement The Attempt at a Solution So I noticed the units of w_0 were in N. In other words to find the moment I would have to integrate 100∫01 x2+1-2x dx. However I ended up with the wrong answer. The correct answer requires that I integrate 100∫01 x2+1-2x x dx...
  34. J

    Force applied to a mass of an inclined plane with mass

    There is a box of mass m on a wedge of mass M with angle θ (the triangle also has a angle of 90 degrees). I need to find the force applied on the little mass, this is what I got: F=-mgsinθ+Mgsinθ Where the first term refers to the force of gravity applied to the mass m and the second term...
  35. N

    Situation for Applied Physicists in Industry?

    I've heard a lot about the situation for physicists in industry (typical jobs they take, difficulty finding a job, salaries, best subfields to transition into industry, etc.) but how about APPLIED physicists (people who graduated with Phds in Applied Physics from programs such as Cornell or...
  36. R

    Partial Derivatives Applied to Chemistry

    Homework Statement Please look at the attached pic. I don't know how to type all these symbols in. Homework Equations Im not sure how to start The Attempt at a Solution I tried using the cyclic rule but the problem just started getting messier.
  37. T

    Bernoulli's Equation Applied to Two Free Surfaces

    Consider two cylindrical containers of the same diameter. Fill them with a liquid to different levels. We all know that the liquid can be "siphoned" from one container to the other using a thin hose, which we will consider to be thin and of uniform diameter. Bernoulli's Equation can be...
  38. E

    Calculate approximately G-force applied on Car shock absorber

    I have to do some dataacquisition from a car with some accelerometers. 4 accelerometers is placed on the wheels before the shock absorber. And i need to calculate the maximum applied G-force on the accelerometers. Just an approximately value, not taking in account the type of wheel...
  39. A

    Applied Thermodynamics - Heat Exchanger problem

    Homework Statement Refrigerant 134a enters a heat exchanger operating at steady state as a superheated vapor at 10 bars, 60C, where it is cooled and condensed to saturated liquid at 10 bars. The mass flow rate of the refrigerant is 10 kg/min. A separate stream of air enters the heat exchanger...
  40. 1

    Forces applied to occupants in car crash (important for assignment )

    Forces applied to occupants in car crash (important for assignment!) Ok so I'm in grade 10 at school and for my physics assignment I'm comparing the forces applied on the vehicle (or occupants) in a collision, where one car has a crumple zone and the other one doesn't. If they were both...
  41. G

    Food for thought Sets logic and applied science

    I was just reading an article the other day about the debate in public schools about teaching evolution as an absolute truth as it has been taght for the past umteen years. Not saying that I'm a proponent of creationism or even that I'm not, but there are some serious flaws in teaching it as the...
  42. D

    Stats / Applied Math programs to consider?

    I'll offer a digest version of my earlier post that appeals to shorter attention spans. I'm considering the pursuit of a graduate degree in statistics. My CV in a nutshell: Math Major: 3.6 GPA (in major) GRE: 159 V / 167 Q Research experience: Summer Institute in Biostatistics (SIBS)...
  43. C

    Newton's Method (as applied to Auto Financing)

    Homework Statement A car dealer sells a new car for $18,000. He also offers to sell the same car for monthly payments of $375.00 for five years. What monthly rate is this dealer charging?Homework Equations A = [R(1 - (1 + i))^-60] / i where A = the present value, R = the monthly payment, i =...
  44. D

    Programs Where should I apply? PhD in Applied Mathematics

    Hello, I am currently in my final year at a California State University majoring in Mathematics (Applied track) and minoring in computer science. I've begun lurking forums such as the physics to figure out what sort of programs I am qualified to apply for, and what be good opportunities as well...
  45. N

    Applied Mathematics or Mathematics ?

    Hello, First of all i found too much helpful posts at physicsforums to understand many things and basic principles about the majors of Engineering, Physics and mathematics. I got recently B.Sc degree in Electronics and Communication Engineering and that was good now i decided to have a...
  46. Z

    Applied or theoretical physics.

    I have a very simple and straightforward question. This has been troubling me for quiet a long time now. Can i go for a phd in theoretical physics with a masters in applied physics ? I basically mean to say that: Will applied physics degree create any kind of hindrance for phd in...
  47. R

    Applied laws of gravity and fluid flow

    A cylinder, open at both ends, laying flat level is to be filled with a substance that will harden as cement.One end has a 90 elbow attached at one end in order to fill cylinder.The cylinder is 25 ft long and 1 ft in diameter.Will gravity alone take the fluid to the very end of the cylinder...
  48. I

    Transformation function from ground state -> nth energy state, force applied, HO

    Hello Everyone! I have a question regarding a Quantum problem I am trying to solve in L. Brown's Quantum Field Theory book, Chapter 1, Problem 4.f. Homework Statement I have a question which asks me to compute [p][/n], i.e. the probability that the ground state (n=0) is brought to the...
  49. H

    Applied mathemics career prospects - Msc enough?

    Greetings. Looking for advice and information concerning the job prospects for a person holding a masters degree in applied mathematics - how good are they, and how much more opportunities would a PHD provide? How many graduates overall continue on to receive their phds? How do private...
  50. J

    How to calcoulate force applied?

    Homework Statement if the coefficient of friction between a 30 kg metal block and the floor is 0.16, what force is required to roll this block across the floor at a uniform speed? how much work is done? find : weight of force, normal force, force applied and fricitional forceHomework Equations...
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