What is Direction: Definition and 1000 Discussions

One Direction, often shortened to 1D, are an English-Irish pop boy band formed in London, England in 2010. The group are composed of Niall Horan, Liam Payne, Harry Styles and Louis Tomlinson; former member Zayn Malik departed from the group in March 2015. The group signed with Simon Cowell's record label Syco Records after forming and finishing third in the seventh series of the British televised singing competition The X Factor in 2010.
Propelled to global success by social media, One Direction's five albums, Up All Night (2011), Take Me Home (2012), Midnight Memories (2013), Four (2014), and Made in the A.M. (2015), topped charts in most major markets, and generated hit singles including "What Makes You Beautiful" (their first number one on the UK Singles Chart, and the highest debut for a British act on the US Billboard Hot 100 since 1998), "Live While We're Young", "Best Song Ever", "Story of My Life" and "Drag Me Down". After the release of Four, One Direction became the first band in the US Billboard 200 history to have their first four albums debut at number one. Their third album, Midnight Memories, was the best-selling album worldwide of 2013.Considered teen idols, One Direction were often subject to fan hysteria. They embarked on four world tours, two of which were all-stadium. The band's Where We Are Tour, in support of Midnight Memories, was the highest-grossing concert tour in 2014, the highest-grossing tour by a vocal group in history, and the 15th highest-grossing concert tour of all time, grossing $290.2 million (unadjusted for inflation). The band went on hiatus in January 2016, allowing all members to pursue other projects.As of 2020, the band have sold a total of 70 million records worldwide, making them one of the best-selling boy bands of all time. The band have won nearly 200 awards, including seven Brit Awards, four MTV Video Music Awards, six Billboard Music Awards, seven American Music Awards (including Artist of the Year in 2014 and 2015), and 28 Teen Choice Awards. In 2013, they earned an estimated $75 million, becoming the second highest earning celebrity under 30 according to Forbes. As the world's best-selling artist of 2013, the group was named the Global Recording Artist of the Year by the International Federation of the Phonographic Industry. In 2014, Billboard named the band "Artist of the Year". Forbes ranked them as the fourth highest-earning celebrities in the world in 2015, and second in 2016.

View More On Wikipedia.org
  1. W

    What is the direction of the red ball's angular momentum

    Homework Statement What is the direction of the red ball's angular momentum about the point A? (see figure) Same as the momentum. Out of the page. Zero magnitude. Opposite to the momentum. Same as rA. Into the page. [/B] Homework Equations Angular Momentum[/B] The Attempt at a...
  2. K

    Understanding the Direction of Acceleration in SHM: Mathematically Explained

    Mathematically, in SHM,why is x'' (acceleration) always in the direction if x increasing? So if he have a simple setup, an elastic spring on a smooth horizontal table, one end attached to a fixed point, the other to a particle. Let's say the fixed point is at the left end of the spring. If we...
  3. R

    What is the direction of rolling friction?

    Homework Statement A forward force on the axle accelerates a rolling wheel on a horizontal surface. If the wheel does not slide the frictional force of the surface on the wheel is: A. zero B. in the forward direction C. in the backward direction D. in the upward direction E. in the downward...
  4. J

    Transistors and current direction

    Can current go either direction in a bjt, mosfet, and jfet? Or are they all usually just one direction? (Especially the jfet. Given the symmetry, I don't see what the difference is between drain and source) Thanks
  5. R

    Probability of Spin in Y-up direction

    Homework Statement a) If a spin-1/2 particle is in the up spin state along z, what is the probability that if its spin along the y-direction is measured it will be found to be pointing in the “up” direction along y? (b) Calculate the expectation values of the components of S, i.e. {Sx, Sy...
  6. D

    Question about magnitude positive y direction

    Hello everybody. If I choose the positive y direction to be vertically downwards, and the positive x direction to be to the right, and take the cross product y cross x, then the direction of the resultant is out of the page (if I draw x and y as lines on paper). The magnitude is yx sin(φ)...
  7. ognik

    Legendre polynomials in the reverse direction

    I have just written a program to calculate Legendre Polynomials, finding for Pl+1 using the recursion (l+1)Pl+1 + lPl-1 - (2l+1).x.Pl=0 That is working fine. The next section of the problem is to investigate the recursive polynomial in the reverse direction. I would solve this for Pl-1 in...
  8. personage

    What is the direction of tension force in a rope?

    Hi everyone, What I understand is that tension only exists if there are two forces pulling on a rope in opposite directions. What I have also read is that due to Newton's third law, the rope actually pulls back with a force equal but opposite to the two applied forces, so the forces look a bit...
  9. FJ Moose

    Off-Road Snorkel head direction, does it matter?

    I know very little about physics, but I have a question. What are the effects of turning an off road snorkel head backwards (facing the rear of the vehicle)? We on the FJ Cruiser forums are debating, and I thought I would ask the experts :) Some of the concerns/debates include: reduced air...
  10. T

    Flux Direction effect on Saturation, Quick Question

    Hi, If you've got an arbitary magnetic Flux1 and Flux2, traveling in the same or opposite directions, through a core, it doesn't matter with regards to the point on the saturation curve does it? Opposing or in the same direction it'll still be at the same point on the mag curve won't it?Thanks...
  11. andyrk

    Direction of pressure in a Fluid

    Have a look at this link guys: http://ocw.mit.edu/courses/mechanical-engineering/2-016-hydrodynamics-13-012-fall-2005/readings/2005reading2.pdf. Could someone explain the term − 1/2 ρ(b∆x∆z) in equation 2.2? I don't understand how does that represent force on the plane along z-axis.
  12. baby_1

    How Do You Determine the Direction and Polarization of E and H Fields?

    Hello Here is an example of "Microwave Engineering " by Pozar. and As you see the answer how solved this problem assumed that E filed has a parallel polarization .could you tell me how can we find E direction and its Polarization. after that could you tell me the direction of this problem...
  13. blooperkin

    Explaining the Decrease in Current in a Rotating Motor

    Homework Statement The armature of a simple motor consists of a square coil and carries a current of 0.55 A just before it starts to move. The coil is positioned perpendicular to a magnetic field. Explain briefly why the current falls below 0.55A once the coil of the motor is rotating...
  14. B

    Exploring Quantum Mechanics & Time's Direction

    I have often heard that in quantum mechanics time has no direction. That the physics works the same going backwards in time than forwards. How does the wave function collapse of a particle follow this idea? If we could see time go backwards would we see particles turning back into waves? Is...
  15. T

    Left-Handed Pion: Direction of Flight vs Spin

    Can you have a left handed pion? i.e. it's spin is opposite to its direction of flight
  16. P

    Air resistance when moving in the same direction but faster

    Hi all, So after the wind almost blew me off my bike today, something occurred to me. It goes like this: We all know that if we bike in the same direction as the air does, then we will get a little push and it makes our journey easier. Then suppose we get a little adventurous (reckless people...
  17. Ookke

    Direction of length contraction in combined motion

    Left picture: There are two moving rails that cross at center (red dot) which itself doesn't move. The rails speeds are close to c, so that they are length contracted by factor 10 (roughly 0.995c). There are markings in rails at interval 10 length units in rails rest frame, so the interval is...
  18. L

    Coulomb's Law, finding acceleration direction

    Homework Statement Two charges q1 = -7 and q2 = -2, both charges are fixed in place and the distance between them is 2m. Third negative charge q3 is moving along the vertical line that connects two charges. 1) net force acting on q3 = 0; where is the charge located ? 2) If charge q3 is...
  19. A

    Direction of instantaneous axis in rigid body dynamics

    The general motion of a rigid body can be considered to be a combination of (i) a motion of its centre of mass about an axis, and (ii) its motion about an instantaneous axis passing through the centre of mass. These axes need not be stationary. Consider, for example, a thin uniform disc welded...
  20. Q

    Direction cosine matrix of rolling disk on circular ring

    Hey all, I'm stuck on this problem and not sure how to proceed/if I'm in the right direction. Problem: One reference frame N sits at the origin (inertial frame) while another frame, B, describes a disk rolling on a circular ring about the other frame. Picture below (A) find the direction...
  21. X

    Conservation of momentum in a system, direction changes?

    We all know that momentum is conserved in a system. But I am confused of one thing. Suppose we have a system containing a wall with very large mass and a ball and use a classical x-y coordinate axis. If I swing the ball at an angle of 45 degrees from the horizontal, upwards to the huge wall...
  22. Lena Carling

    Net Forces of 3 uneqaul charges of equilateral triangle

    < Mentor Note -- thread moved to HH from the technical physics forums, so no HH Template is shown > Three point charges are located at the corners of an equilateral triangle as Q1 in the top, charge Q2 in the left corner and charge Q3 in teh right corner. Each leg of the triangle has a length...
  23. E

    NPN BJT in reverse active mode - base current direction

    Hi! I was wondering what happens with Base current direction if NPN BJT works in reverse active mode? In forward active and in saturation mode currents are like this: Collector and emitter currents in reverse active mode would be in opposite direction: :
  24. F

    Help -- Linear to rotary motion, cw and ccw direction

    Hello,im doing a home project. I have an idea to make a venchile which will move back and forward as well as turn. Its something that i will be able to control with control device,if i press forward it goes forward etc. The thing is that i want to make it with linear...
  25. Mike Dacre

    Does KP predict reaction direction?

    I think I already know the answer to this, but I can't find an easy reliable source online. Does KP predict reaction direction in the same way as KC? i.e. If KP is greater than 1, the reaction favors the products, and if it is less than 1 it favors the reactants? Or is it just that if KP is...
  26. R

    Boat Positioning: Lorraine and Jeff's Displacement in Race - Homework Question

    Homework Statement Lorraine steered her boat out of the harbor, heading east. She traveled 500 m to one buoy and then turned north and headed 300 m to another buoy. Jeff also left the harbor from the same point, and traveled 300 m [N] to a buoy, and then went 500 m [E]. a) What is the position...
  27. wabbit

    Is the Origin of Time at the Bounce in LQC a Solution to the Entropy Problem?

    My understanding is that, in the standard GR BB model, an expanding universe starts with infinite spacetime curvature but zero space curvature; but a collapsing universe ends with a diverging, spagghettifying spatial curvature - very different animals. The LQC bounce however connects, through a...
  28. R

    Force required to change direction

    Homework Statement The speed of a 2 kg object changes from 30 m/s to 40 m/s during a 5 s time interval. During this same time interval, the velocity of the object changes in direction by 90 degrees. What average force was applied during the time interval? Homework Equations impulse = F.t The...
  29. A

    Net Force Direction for 10kg Mass: How to Determine?

    Two forces in addition to its weight are acting on a 10kg mass. What is the magnitude and direction of the net force acting on the mass? I was able to figure out the magnitude, but how do I find the direction? Thanks.
  30. I

    How to get the magnitude and direction?

    A bomb is released from an airplane flying horizontally at an elevation 1600 ft with a velocity of 294 ft/s. I don't know how to get the magnitude. Will you please help me?
  31. J

    Direction of a photon is fixed upon creation or observation?

    My question is a little more broad than I could make clear in the title but here goes. First of all, to be clear, am I correct in understanding that light behaves in precisely the same way as an electron in the sense that there exists a wave function which evolves according the Schrodinger...
  32. Y

    Inclined plane and pulley: how to know the acceleration's direction

    Homework Statement A block of mass m1= 3.70 kg on a frictionless plane inclined at angle θ=30.0° is connected by a cord over a massless, frictionless pulley to a second block of mass m2=2.30 kg. What are (a) the magnitude of the acceleration of each block, (b) the direction of the acceleration...
  33. PattyCake

    Find Magnitude & Direction of q1, q2 & q3 Forces

    1. Given that q=+12uc distance=19cm Find Magnitude and direction exerted on point q2. What happens to the force if the distance is tripled?q____________ q2 ____________q3 q1=+12 q2=-2.0q q3=+3.0q distances between point are equidistant.The Attempt at a Solution F=k Q Q/ d^2 F=F+F...
  34. G

    What Equation Calculates Maximum Shear Strain Direction?

    Homework Statement Hi Everyone, I am going to be doing an experiment soon using strain gauges on a beam and I will have to, among other things, calculate the direction of the maximum shear strain with respect to the axis of the beam. I am trying to find the correct equation to use. Homework...
  35. K

    Direction of Electric Force in a E. Field?

    Is the electric force negative when it is in opposite direction as the electric field? If it is, a positive charge would always have a positive E. force? thanks.
  36. K

    MHB Showing the “only if” direction of equality in a complex equality

    *How can I finish off the "only if" direction? I am just unable to prove the only if direction! Using the induction hypothesis and the triangle inequality is confusing me for some reason.* Show that \begin{equation} |z_1+z_2+\dots+z_n| = |z_1| + |z_2| + \dots + |z_n| \end{equation} if and only...
  37. D

    Two parallel wires carrying currents in the same direction.

    Homework Statement Two parallel wires both carry currents directed from left to right. A circular wire loop lies in the plane of the two wires midway between them. The currents are positive charges. Sketch the changes in the magnetic fields induced and the resultant current direction in the...
  38. D

    Understanding Coil Winding Direction & Polarity

    So I've been told that the direction that you wind a coil will determine the polarity of the induced voltage across the coil. I drew out two coils with clockwise and counterclockwise winding direction and with using the right hand rule and saying that the positive polarity of the induced...
  39. Calpalned

    Vector with the same direction but a different magnitude

    Homework Statement Find a vector that has the same direction as <-2, 4, 2> but has length 6. Homework Equations Length of vector in 3D = |v| = (x2 + y2 + z2)0.5 The Attempt at a Solution I can see that the length of the given vector is (-2)2 + 42 + 22 = 24 36 is (1.5)24, so I tried...
  40. L

    Find Magnitude & Direction for acceleration

    Homework Statement Block B has acceleration of 4 m/s2... Relative acceleration of block A w/ respect to B is 4 m/s2. Find magnitude & direction of accel for A? Homework Equations a_A = a_B + a_A/B x_A = x_B + x_A/B y_A = y_B + y_A/B The Attempt at a Solution x & y components: -4cos(20) =...
  41. L

    Find Magnitude & Direction for acceleration:

    Homework Statement : Block B has acceleration of 4 m/s2... Relative acceleration of block A w/ respect to B is 4 m/s2. Find magnitude & direction of accel for A?[/B] Homework Equations a_A = a_B + a_A/B[/B]The Attempt at a Solution a_A = 4 +4 = 8 m/s2 <-- 8*cos(20) = 7.52 (x-component)...
  42. H

    Engineering Direction To Engineering Career: Work is Unfulfilling

    I currently have an entry level desk job in engineering at a large defense contractor. The work and lifestyle is...very boring...to say the least. Right now my work is not very challenging (I suspect because it is entry level right now, but I have seen people with 5-10 years of experience doing...
  43. Jewish_Vulcan

    Direction of motion climbing up stairs for work problem

    I wanted to know why the we calculate the work done of a person climbing up a set of stairs using the y direction,for example, we use the equation w=mgh to calculate the work done for a person climbing up a set of stairs. I do not understand why we are not also calculating the work done in x...
  44. E

    Statics: Direction of Vertical/Horizontal Components

    1. The Problem 2. The Free Body Diagram 3. The Question I've always had trouble determining the direction of the vertical and horizontal components in FBDs for statics problems, especially for a pin. Prior to looking at the solution, I wasn't sure on almost all of the directions of the...
  45. terryds

    Understanding Normal Force Direction in Leaning Ladder & Cable Beam Systems

    I know that normal force is a reaction force. http://www.sumoware.com/images/temp/xzhhpaacgkdktjna.png In the leaning ladder problem, the normal force is perpendicular to the floor and the wall. But, in the cable and beam problem, why isn't the normal force perpendicular to the wall ...
  46. andyrk

    Why Does Tension Act in Two Directions at a Point in a String?

    Why is tension at a specific point in a string in 2 directions? For example in the first part of image 1, the string is pulling the two blocks upwards. And in the second part of image 1, the string is pulling the pulley down too. Does tension at a point in a string try to pull the point in 2...
  47. S

    Direction of motion of conductor (force)

    I can't understand this. When I think of a conductor I think of a cable, and last time I checked they are pretty static. So what is this "force" in practical use?
  48. L

    Solving Vector Direction & Distance Problems - Guam Example

    Homework Statement A ship leaves the island of Guam and sails a distance 300km at an angle 46.0∘ north of west. In which direction must it now head so that its resultant displacement will be 115km directly east of Guam? (Express your answer as an angle measured south of east) part B: How far...
  49. dumbboy340

    What Determines the Direction of Acceleration in Circular Motion?

    My friend and i were having a conversation on circular motion and were confused with the direction of acceleration along that circular path.what will be the direction of acceleration of an object which is in circular motion? Thank$$!
  50. G

    Direction of max strain from Mohr's circle

    Homework Statement Hi, I am doing some things with Mohr's circle. I am trying to find the direction of max strain but I am a bit confused. How can I do this? Homework EquationsThe Attempt at a Solution I always assumed that the max strain occurs at 90O from the normal axis or 45O in real...
Back
Top