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.
Hello,
I have this matrix element
\langle n', l', m'| x |n, l, m \rangle
where x=rsin\theta cos\phi in spherical polars
Which I write explicitly as:
=\int \int \int R_{n', l'} R_{n, l} A_{l', m'} A_{l, m} P^{m'}_{l'} P^{m}_{l} e^{im\phi} e^{-im\phi} rsin\theta cos\phi r^{2} sin \theta d...
Hi, I'm learning vectors and there's two notions which I don't distinguish :
Is the orientation of a vector (determined by the angle it has) the same thing as the direction of a vector ?
thank you
Homework Statement
My question is simple.
Homework Equations
Why do we not take the direction of secondary wavefronts from the point sources to be going backwards to the original direction of the wave as a whole?
The Attempt at a Solution
Thanks to you! :D
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...
Homework Statement
Show that the E and B field of a plane EM wave are both perpendicular to its direction of propagation in a non-dispersive and transparent medium.
Homework Equations
Maxwell's equatons.The Attempt at a Solution
Well, I know how to easily show that E and B fields are...
Hi. I'm really confused in how to find the moment done by force.
I want to find the moment done by the force in this figure.
The book has resolved the force into its components using principle of moments.
So, how do i find the moments of the components of the force? I know I'm...
Dear friends, and science lovers,
I am doing some statics problems with moment( cross-product).And I've been having some problems solving them.I am getting the result but in opposite sign. I mean I know we have to do R x F , but looks like I am taking R in the wrong a. For example we have to...
Homework Statement
I haven't studied forces acting on angles yet.
An object of mass 1kg is moving horizontally at a constant speed 10m/s.What is the the force required vertically to turn it 40 degrees to vertical?
Not a home work question
Homework Equations
:confused:
The...
Homework Statement
1. A wire of length L and carrying current I is bent into a square loop to form a magnetic dipole. This dipole is then oriented in a uniform magnetic field of magnitude B such that the dipole is in its lowest energy state. What is the value of the dipole's energy with this...
Homework Statement
What is the direction of the moment?
A) along +x
B) along −x
C) along +y
D) along −y
E) into the page
F) Out of the page
Homework Equations
T=rf
The Attempt at a Solution
I said out of the page because when I use the right hand rule, my...
Homework Statement
A monument is made from stone blocks of density 3800kg/m^3. The monument is 15.7m high, 64.8m wide at the base, and 3.6m thick from front th back. How much work was required to build the monument? (Hint: find ycm).
Homework Equations
ycm = (1/M) * ∫ydm, M = mass total...
When light goes from air to water,it change direction. Thas is because phtons interact with atoms of water. But what happened and they change direction??(refraction)
Hello, I have two vectors, the angle between them is dynamic and constantly changing. I have found a way to calculate the angle between these two vectors. But this angle is always a positive number even if i am looking left or right. How can i get context(wether vector DC,DB,DE,DF according to...
Homework Statement
Just a quick question I had about finding the direction of a magnetic force.
I have abandoned my 2D way of thinking when it comes to these because perceptually it's completely wrong to think about it that way.
Lets say I have an electron moving with a constant velocity...
Homework Statement
A 325Kg boat is sailing 15° north of east at a speed of 2.00ms-1. Thirty seconds later it is sailing 35° north of east at a speed of 4.00ms-1. During this time, three forces act on the boat: A 31N force directed 15° north of east (engine), a 23N force directed 15° south of...
Homework Statement
I posted a similar type of question earlier. But somehow, i figured out how to do it. For this question however, I have no clues how to do it. The word document having the image is attached
Which of the following dierential equations corresponds to the direction field...
Homework Statement
Which of the following dierential equations corresponds to the direction eld
shown below?
1) y'=x+y
2) y'=xy-1
3) y'=1-xy
4) y'-xy
5) y'=x-y
Homework Equations
The Attempt at a Solution
I have no idea how can this be done. I mean I used to deduce...
Nodal Analysis , Can't Understand the direction of a current !
In This Question "Nodal Analysis" we will apply kirchhoffs current law ..
My Question is :
Why in Fig 8.51 and 8.52 the currents take these directions ??
i tried to get it but i couldn't
Photos :
Thanks...
While learning about angular momentum in class my professor posed the question, "Why are their less left handed quarterbacks in the NFL than right handed?". He goes on to explain that in the case of a right handed quarterback the ball is given a clockwise rotation giving it angular momentum in...
does direction of magnetic field influence the process occurring in brain? what are the other external factor that influence the brain other than information?
I have completed this question but I am not sure I am right.
3 co-planer forces acting at a point 0, 100KN→ at 0deg from o point, 70KN→120deg from o point and 50KN →210deg from o point (hope that make sense, can't draw it).
using a scale of 10mm+10KN determine, By means of polygon of...
Homework Statement
Two forces are acting on a 0.250-kg hockey puck as it slides along the ice. The first force has a magnitude of 0.405 N and points 25.0° north of east. The second force has a magnitude of 0.565 N and points 75.0° north of east. If these are the only two forces acting on the...
1. Two charged particles are traveling in circular orbits with the same speed in a region of uniform magnetic field that is directed into the page, as shown. The magnitude of the charge on each particle is identical but the signs of the charges are unequal. Which one of the entries in the table...
the heat causes the molecule to vibrate.how does the molecule vibrate in terms of angle formed by vibrating molecule and the direction of tranfer of heat in conduction, convention and radiation?
I have come across this problem, who to determine the direction of induced current.
It keeps me wondering why the answer that i got is Fleming's right hand rule?
Aren't it should be Right hand grip rule?
Cz the usual and conventional way of inducing electricity in a solenoid is to pass the...
Homework Statement
A 2,200-kg car is moving down a road with a slope (grade) of 14% at a constant speed of 11 m/s.
Homework Equations
The equation that I'm using is ƩF=ma and friction=μN
The Attempt at a Solution
the mass is 2200kg
the acceleration is zero because of the constant...
can the direction of flow of current be used to define binary circuits. can we consider a particular direction of flow as +1 and it's opposite as -1 and no current as zero?
Homework Statement
Assuming the following directions of the charged particles velocity and magnetic field indicate the direction of the magnetic force exerted on the particle?
Homework Equations
The Attempt at a Solution
The force vector is perpendicular to the B field and the...
Homework Statement
Homework Equations
-
The Attempt at a Solution
The relative velocity of magnet with respect to ring is 5−4=1m/s
How can I find the Direction of induced current in conducting ring due to motion of bar magnet?
I searched online and found this ...
Homework Statement
knowing the tension in cable AB is 570 N, determine the moment about each of the coordinate axes of the force exerted on the plate at B . This link has a picture...
Homework Statement
A circular metal plate of radius 0.2 m has 1010 excess electrons uniformly distributed over its surfaces. What is the magnitude and direction of the field just outside the plate near its center?
Homework Equations
E = kQ/r2
The Attempt at a Solution
Starting with E =...
Homework Statement
Two forces, vector F 1 = (4i+ 6j) N and vector F 2 = (4i+ 8j) N, act on a particle of mass 1.90 kg that is initially at rest at coordinates (+1.95 m, -3.95 m).
a)What are the components of the particle's velocity at t = 10.3 s?
b) In what direction is the particle...
Homework Statement
What is true about the direction the acceleration vector points in circular motion situations?
Homework Equations
a It is perpendicular to the motion.
b There is no acceleration.
c It points opposite the motion.
d It points parallel to the motion.
The...
Homework Statement
Two very large, non-conducting sheets, each 10cm thick, carry uniform charge densities δ1 = -6.00μC/m^2, δ2 = +5.00μC/m^2, δ3 = +2.00μC/m^2, δ4 = 4.00μC/m^2. Use Gauss's law to find the magnitude and direction of the electric field at points A, B, and C, far from the edges...
Homework Statement
Vector a has a magnitude of 4.3 m and is directed east. Vector b has a magnitude of 3.9 m and is directed 35° west of north. What are (a) the magnitude and (b) the direction (from east) of a + b ? What are (c) the magnitude and (d) the direction (from east) of b - a...
Homework Statement
The x and y coordinate direction angles of a vector are 50 and 105 degrees, respectively. If the z component of the vector points in the negative z direction, what is the z coordinate direction angle?
Homework Equations
The Attempt at a Solution
I was going to...
Homework Statement
As an example of the manipulation of an electron beam, consider an electron traveling away from the origin along the x-axis in the xy plane with initial velocity vi hat bold = vii hat bold. As it passes through the region x = 0 to x = d, the electron experiences acceleration...
As part of a Griffiths problem, I have a charged capacitor placed in a uniform magnetic field which points in +x direction. the capacitor plates are parallel to xy planes. Suddenly, the B field starts decreasing in magnitude...what is the direction of the induced E field?
It makes most sense...
I am consistently getting this wrong. To me, in the picture below, it would make sense that the structure would be pulling downward, and the cable BD would be pulling upward - thus the system is in equilibrium.
However, the solution to this problem show the force being applied downward...
Problem:
The height of a hill (in meters) is given by [z=(2xy)-(3x^2)-(4y^2)-(18x)+(28y)+12], where x is the distance east, y is the distance north of the origin. In which compass direction is the slope at x=y=1 the steepest?
Solution (so far):
Does it have something to do with the...
Homework Statement
Two point charges are placed at two of the corners of a triangle as shown in the figure. (Take q1 = -11.3 μC, and q2 = 15.4 μC.) Find the magnitude and the direction of the electric field at the third corner of the triangle. {Correct Answer: 1.07e+07 N/C at 71.2 degrees...
In my lab I have a TEM00 laser, so there is no electric or magnetic field in the direction of propagation (call it z direction). However, I know that the intensity of the laser is greatest when my eye is along z direction...why? If there is no electric field along this direction, then what is...
Homework Statement
A ball [Weight 5 kg & velocity 20 m/s] coming straight at me. How much force I would need to change its direction at 0 degree on left side & sent 20 meters?
I simply don't know what formula I should use.Let alone how to calc it.
Homework Statement
See attachment.
The net pressure force on this control volume is P1*A - P2*A. My question concerns the direction signs.
My thinking is this:
The unit vector on the control volume naturally points outward (n hat). Since the pressure force PA is pushing TOWARDS the control...
Homework Statement
I am trying to understand why, in an example in Griffiths E&M (3rd ed, 8.1) says that the Poynting vector of a current carrying wire that is being heated via resistance (Joule heating), has a Poynting vector pointing radially inward. The E field is parallel to the wire, B...
(Sorry for the typo in the title. I don't know how to get rid of it)
Recently I was looking at the Lorentz co-variance of F=dA (the Faraday 2-form) and *F=*dA (the Maxwell 2-form). I realized that Lorentz co-variance implies that the electric field strength and magnetic field strength are...
1. 1: Suppose eight identical point charges q are placed at the corners of a cube with side length L.
Find the magnitude and direction of the electric force produced exerted by these charges on another
charge q at the center of a face of the cube.
Homework Equations
3. So far...
Is the direction of surface tension on the surface of a liquid into the surface or parallel to it along the surface of the liquid? And how? I am confused between both of them because, when we take an example of line on the surface of a liquid, we say that liquid surface is behaving like a...
Why is direction irrelevant when it comes to approaching the speed of light? I speak of the curious effects that follow (time dilation, swell in mass, etc)
Intuition tells me that the big bang happened at a single point, therefore it's only logical to travel in the direction of that point if...