Direction Definition and 999 Threads

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.

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  1. G

    Shearing Force Direction in Fluid Mechanics

    Homework Statement why the shearing force acting on the object in the first diagram is in different direction , while in the second photo , it's in same direction ?Homework EquationsThe Attempt at a Solution in my opinion , it should be in different direction , because the shearing force must...
  2. W

    Why Is the Resultant Force on the Blade Directed Downwards?

    Homework Statement why the resultant force on blade is acted downwards (toward A)? why shouldn't it be slanted upwards ? since the horizontal component of the force acted 2.12kN to the left , and 0.735kN upwards , we would get the resultant force acting slanted upwards , right ? Homework...
  3. S

    Preferential bending loading direction of a beam

    Hi All, I'm trying to think through a problem and was hoping to ping the community for guidance. Suppose you have a beam that's symmetric about 2 axes (like a u channel or a triangular extrusion). Is it better to load the beam in compression on the side with material furthest away or should you...
  4. Jilang

    Is the direction of spin changed by measurement?

    I have been under the impression that application of a magnetic field will quantise the z component of an electrons spin in that direction. I see this as a physical process, but Is this incorrect as it is often described as a measurement of a random variable/ wavefunction collapse? I am familiar...
  5. PhiowPhi

    Direction of velocity parallel to magnetic field?

    I have a set-up where there are multiple conductive wires separated by insulators placed parallel to one another and current ##I_w## is flowing within each conductor(all currents are parallel and equal),they create a magnetic field and I believe would add up like this diagram: The current is...
  6. S

    Direction for Future: I'm Finishing High School & Want to be a Physicist

    I am finishing high school this year and i want to be a theoretical physicist. My academic result in mathematics is not good throughout last 5 years. But physics is my dream. I want to overcome every obstacles. I think i am not bad at mathematics but the reason behind my bad result was lack of...
  7. SDewan

    Direction of Friction for Rolling Spheres on Rough Surfaces

    Hi all, Can anyone please help me out with the direction of friction in a case where there is a smooth spherical body pure rolling on a rough surface? What is the direction of friction? Also, is it possible to have pure rolling without friction? Thanks SD
  8. B

    Find the magnitude and direction of vectorA - vector B?

    Homework Statement Vector A⃗ has a magnitude of 20m and makes an angle of 30∘ above the positive x axis. Vector B⃗ has a magnitude of15m and is oriented 60∘ to the left of the y axis. Find the magnitude of A⃗ −B⃗ . Find the direction of A⃗ −B⃗ . Homework Equations sin 150 = sin 30 = 0.5 cos...
  9. Aristotle

    Engineering KVL for a RLC circuit given current direction and polarity o

    Homework Statement KVL for a RLC circuit given current direction and polarity of a resistor? Here is the diagram of the circuit: Homework Equations KVL Sum of voltages equal zero The Attempt at a Solution I am actually looking for the voltage across the inductor (VL), so I decided the...
  10. P

    Polar Jet Stream Flow: Counter-Clockwise Around Earth

    Why does the polar jet stream flow counter-clockwise around the Earth (as viewed from the north pole)? It seems that since the air at the north end of the Ferrel Cell and the south end of the Polar Cell rises, the Coriolis effect would cause a circulation in the clockwise direction.
  11. B

    Adding and Subtracting Vectors of Different Directions

    Homework Statement Given the initial velocity of 6m/s[North] and the final velocity of 3m/s[East], how would you find the change in velocity? Homework Equations Change in velocity= final velocity- inital velocity The Attempt at a Solution [/B] I don't know how to do this. I know that if the...
  12. M

    Which direction for the MSc thesis is best?

    Dear All, I have been offered to chose a direction for the MSc thesis in Theoretical High Energy Physics; 1: SUSY 2: SM 3: BSM 4: QFT in curved space etc 5: Quantum Gravity etc can anyone advice me which would be a better choice in getting a Phd position later? I don't want to chose something...
  13. Cluemore

    Electric Field & Motion: Understanding Why it Doesn't Change

    I understand from my classes that, when looking to calculate the electric field of a charge we can use the electric field measured in its rest frame to find its electric field in the lab frame (where the charge is moving). The gamma factor changes the value for the component electric field if it...
  14. P

    Difference between direction and dimension

    Hello, Can you tell me what is the difference between direction and dimension?
  15. AutumnWater

    Will epsilon delta test fail if curve changed direction?

    Will epsilon delta test fail if curve changed direction within the +/- delta of the limit point? Is there a scenario where no matter how small we pick delta to be, the frequency of the graph changing directions is always going to be a higher than delta's distance? In that scenario the limit...
  16. S

    Find the magnitude and direction of the acceleration of the

    Homework Statement m=25 kg, F1=88N[E55N],F2=54N[E], mu (coefficient of friction) = 0.350 Homework Equations FNet=F1+f2-Ff The Attempt at a Solution 88cos55 + 54=104.47, 88sin55+0=72.1. dheta=tan inverse (72.1/104.47)=34.6 degrees, what direction is Ff is my question and I would appreciate a...
  17. G

    How is current direction in transformer determined and why?

    Hello. Please see the attached picture first. For typical battery (nothing but capacitor), current direction is clear as electrons can't not flow across the two plates in battery so they only choose wire as a path from cathode to anode. But in transformer (+ and - sign represents voltage at...
  18. T

    Confused About Forces in Bearings: Getting Reactions in Axial Direction

    I was confused about this example from a book. After putting in some numbers I got the forces circled in green and blue to be negative. Does this mean the directions for the forces shown is incorrect, and so I should switch the directions before calculating the reaction forces in the bearings (x...
  19. kostoglotov

    Why isn't this largest voltage source given as negative?

    This isn't actually a homework problem, but it is an example in a my textbook that I have a question about... imgur link: http://i.imgur.com/2OglMH4.png Ok, I wanted to clarify some things. I understand that current flowing from a positive terminal to a negative terminal represents a...
  20. N

    Mirror plane and spin direction

    Consider a system with a mirror axis (bulk projected surface), I want to know the direction of spin polarization on the mirror axis. The result is that the spin is perpendicular to the mirror axis, but I don't understand the reason. If someone have related references, please recommend to me...
  21. M

    Why does Lorentz force have that particular direction?

    Why does Lorentz force have that particular direction? Why is it perpendicular to the magnetic intesity and the current? Is it cause of some photons' reactions? Thanks
  22. A

    What is the direction of hinge force?

    how to find direction of hinge force? for example ,if a disc is hinged at a point on it's circumference and is exhibiting a rotational motion due to gravity,what is the hinge force?
  23. Martin V.

    Direction of current when performing KCL

    Who do I know the direction of the current flow, when I make nodal analysis?
  24. M

    Light Beam Opposite Motion: Einstein Special Theory

    Hello Everyone. I recently studied the Einstein special theory of relativity. I studied the thought experiment where a beam of light is thrown from a moving spaceship in the direction of its motion and the distance after a certain time interval was different from perspective of a man on...
  25. Dale

    Direction of magnetic force between moving particles

    [Split off from this thread] I think that the force is always repulsive. I think that an electron would have to travel faster than c for it to become attractive.
  26. D

    Direction of the components of a vector using trigonometry

    Homework Statement The truss supports a sign board as shown in the figure. Calculate the reactions at A and the force in the member FG produced by the horizontal wind load of 60lb per vertical foot of a sign. Homework Equations ΣFx=0 ΣFy=0 ΣM=0 The Attempt at a Solution Everything is right...
  27. jcruise322

    Finding direction of angular momentum of system~

    Homework Statement A rod that is fixed to a vertical wall is attached through the middle of a solid disk. A piece of the disk crumbles off when the disk is spinning and rises vertically. The system is the chip and the spinning disk. Assume no friction. A. How does the direction of the angular...
  28. Benwade

    How is the direction (vector?) of momentum stored physically

    Homework Statement I am not a student, but one poster was kind enough to answer my stupid question last week, and I was wondering if anyone would mind if I posted another stupid question. When an object is moved in a specific direction, how is the direction of momentum stored or recorded. By...
  29. A

    Direction of friction when a body moves in a circular track?

    please explain why? Take 2 cases,and explain how is the direction of friction different in these 2 cases. CASE 1:uniform circular motion CASE 2:non uniform circular motion my thought was,friction opposes relative motion,so it must be tangential to the particle at each and every point. i very...
  30. M

    Direction of polarization for monochromatic wave?

    Homework Statement Write down the (real) electric and magnetic fields for a monochromatic plane wave of amplitude Eo, frequency w, and phase angle zero traveling in the direction from the origin to the point (1,1,1) with polarization parallel to the xz plane. I understand how to write the...
  31. L

    What physical direction is "horizontally to the north"?

    Homework Statement I am in Intermediate Electricity and Magnetism, and am working on review problems. I have a potentially very silly question: What physical direction is "horizontally north" (and similarly "horizontally south")? This seems like a counter-intuitive description to me (90...
  32. DoobleD

    Direction of current in a "middle" branch?

    Consider the following circuit (arrows represent current direction) : How does one determine the direction of the current in the middle branch ? Would it be correct to assume that : - if emf 1 > emf 2, current directionin middle branch is up, - if emf 2 > emf 1, current direction in middle...
  33. P

    What is the direction of pressure force and why is it confusing?

    I am confused about the concept of pressure force. Let's say we have some pressure acting on a flat plate. Would the force associated with this pressure be oriented into or out of the plate? Intuition obviously tells me that the pressure force is acting into the plate, but the math appear to be...
  34. L

    Understanding Friction Direction in Static Problems

    Hi Guys. I catch myself with confused a little bit of friction and physics. It's really simple to understand if it's a 1 box. And then you know that friction is opposed the motion. But it's little complicated for me in those cases : Case 1 : I assume that we will push the box 1 to right...
  35. AHashemi

    Direction of (Inertial) centrifugal force here?

    Homework Statement an object is sliding on an elliptical hill shown in picture. what is the direction of (inertial) centrifugal force at each moment? Homework Equations F=mv^2/r The Attempt at a Solution I think it should be towards the center of ellipse and value of r in the formula varies...
  36. O

    Determining the direction of friction

    Homework Statement Given the following diagram: When examining the FBD for member AB how does one determine the direction of friction at B? If surfaces B and C exhibit friction. Homework Equations N/A The Attempt at a Solution I know that impending motion for post BC is in the direction of...
  37. W

    Questions about rolling and direction of static friction?

    I have spent quite some time trying to get this, can someone please help me understand this? A plank is being pulled by a constant force F, it rests on top of two identitcal sylinders - there is rolling without slipping. What I don't understand is, why does F(p) - red arrow force, affect the...
  38. W

    In which direction does static friction point?

    As I see it; static friction is what provides the centripetal force, but does it do anything else? When the brother applies tangential force, what will happen with the static friction, because I assume it will start to provide less centripetal force because the tangential speed of the child...
  39. C

    How Do I Determine Current Direction After Solving Node Voltages?

    Homework Statement Hi all, how do I know how the current direction are through each elements after solving a circuit (finding node voltages w.r.t GND)? I think my understanding in electricity is rather incomplete. For example, I know that current should flow from a higher potential to a lower...
  40. G

    Trouble finding direction of two force vectors

    Homework Statement [/B] A block of mass 2kg is accelerated by the two forces F1 = 8i + 3j and F2 = -5i - 7j, (a) What is the net force on the block in unit vector notation, and what is its magnitude and direction? (b) What is the magnitude and direction of the acceleration?Homework Equations...
  41. B

    Angular Velocity Direction: Perpendicular or Parallel to the Plane of Motion?

    Hi all, please help me here! Im confused, is direction of angular velocity perpendicular to the plane of motion, or along the plane of motion?? From hyperphysics - http://hyperphysics.phy-astr.gsu.edu/hbase/rotq.html -...
  42. R

    How to make nickel gallium compund? Basic advice / direction

    Hi, I wish to make Ni5Ga3 for use in an experiment, it needs to be in powder form. Please could someone direct me to a place where the methodology can be found? I usually order chemicals online, but my supplier (Sigma) does not have this compound so I need to make it. Also I need to consider...
  43. R

    Calculate force in north/east directions given 2 components

    Hello, My question is about using vector components to find a force in a particular direction. I already have the answer, I just don't understand it and would like an explanation if anyone has one. If I have two vectors with radial velocities (in this case it's measurements of ocean current...
  44. M

    Need help figuring out this forces question

    Homework Statement the question states: "wo forces act on an object at an angle of 75 degrees. One force is 195N. the net force it 225n. determine the second force that it makes with the net force" Homework EquationsThe Attempt at a Solution I tried finding the second force by finding the two...
  45. A

    Equation of the tangent line in the direction of a vector

    I am having issues figuring out how to do the "in the direction of the vector" part of my problem I have found the equation of the tangent line but i do not know how to the the next part. My question asks: Find the equation of the tangent line to the surface defined by the function f(x,y) =...
  46. B

    Coil Winding Direction: Clockwise vs Counter-Clockwise

    I am wrapping a transducer coil and had a question with the winding direction. Let's say that I am wrapping the wire around a bolt in a clockwise direction. After I reach the halfway point of the wire, if I then reversed the direction I am winding to counter-clockwise, what would it do? I am...
  47. V

    Direction of current in a magnetic field when loop is square

    Homework Statement A flexible wire loop has a radius of r = 0.178 m and it is inside a uniform magnetic field of B = 0.332 T. The loop is grasped at points P and Q and stretched until its area is zero. It takes 0.146 s to close the loop. Homework Equations EMF = ∆Phi/∆t Phi = magnetic flux...
  48. B

    On the direction of particles in a tokomak

    in simpleton's terms, a tokomak magnetically confines a circulating plasma. I assume the plasma circulates for the same reason that electric current flows in the presence of a changing magnetic field. By looking at the design of a tokomak, I would guess the donut magnets are activated...
  49. K

    Does work account for direction when considering only KE?

    Homework Statement A 60 g particle is moving to the left at 20 m/s . How much net work must be done on the particle to cause it to move to the right at 40 m/s ? Homework Equations 1/2 mv^2 = KE, W = ΔE The Attempt at a Solution My initial method of solving this problem was to take the...
  50. D

    Magnetic Flux Density Direction

    Would the direction of the Magnetic Flux Density vector B at the south side be towards the south pole like this? and is the direction for B correct for the other side? One more thing, how can magnetic flux density be a vector and have a direction when its sort of a density, I mean its over an...
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