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.
We all know that the area of a triangle having consecutive sides as ##\vec { a }## and ##\vec { b }## has the area ##\frac { 1 } { 2 } | \vec { a } \times \vec { b } |## but what is the direction of that area vector? I mean if we consider ##\vec { a } \times \vec { b }## that will be one...
Object with mass ##m## is sliding down a sloped (incline = ##\alpha##) object of mass ##M##. The coefficient of kinetic friction acting between ##m## and ##M## is ##\mu##. There is no friction between object ##M## and the ground.
In the drawing above, the red vectors above are the forces acting...
In Torque-Free Precession of a plate, can the direction of the Wobble be either in the spin direction or retrograde to it?
For instance if you tossed the plate upward vs downward with the same spin direction. Would the wobble direction and frequency be inverse?
Homework Statement
I'm working through an example with motional EMF and I'm having trouble understanding the directions of vectors so that I can apply induction law.
The magnetic circuit seems complex because the circuit is used to analyze other situations but the air gap 3, the coil 3 and the...
If all three quarks in a baryon have the same flavor, they all spin the same direction, causing the baryon to have 3/2 spin. In a proton, do both up-quarks spin in the same direction (with the down-quark spinning opposite)? Or can the two up-quarks spin in opposite directions?
Homework Statement
The figure below shows a small circular loop of wire in the plane of a long, straight wire that carries a steady current I upward. If the loop is moved from distance x_2 to distance x_1 from the straight wire, what will be the direction of the induced current in the loop and...
Homework Statement
A proton moves with a speed ##v = 3 \cdot 10^5 \frac{m}{s}## in the parallel direction to ##i+k##. A magnetic field of ##1T##, in the ##i+j+k## acts over it. Which electric field must we apply in this region so that the Lorentz force over the proton is null?
Homework...
To start of, I'm new to physics Forums.
My thoughts this evening are directed to a physics question. "How to calculate a direction of a wave".
The things i believe i need is three sensors that indicates When the wave passes the equipment.
I will measure each specific time and compare them...
I used the following links:
C++ software using elliptics integral at: https://tiggerntatie.github.io/emagnet/offaxis/elliptic_c.htm
And the calculator here: https://tiggerntatie.github.io/emagnet/offaxis/iloopcalculator.htm
I placed some values and obtained Br smaller than Bx, so I do not know...
Homework Statement
in the attached file
Homework Equations
Momemtum = mass - velocity
The Attempt at a Solution
I solved it E. Since object 2 has the larger mass, the effect is less and will move backwards a little bit.
Homework Statement
The question askes about the path of the electron. I need to know if I am doing it correctly whether it was asked for a proton or an electron.
Homework Equations
F=QV⊥Bsinθ
The Attempt at a Solution
I answered it C. Because it is an electron, I used my left hand. My thumb...
<Moderator's note: Moved from a homework forum.>
1. Homework Statement
Is the gradient perpendicular to all surfaces or just level surfaces?
For instance, if I I have a function f(x,y)=z where z is the dependent variable then that is a surface, wouldn't that be a level surface to a function of...
If i have two blocks on top of each other and there is friction between the two blocks and it's a kinetic friction ( given μk). if i was given the force applied on the lower block to the right direction for example. ignoring the friction between the lower block and the ground, i tried to draw...
A Hall current arises when electric currents transverse to a magnetic field exist. In this figure (found online), the Faraday current appears to be going upwards due to a magnetic field pointing into the page, but is this correct?
I'm largely just trying to understand the origin of the Hall...
Having trouble with something that's likely too trivial, but here goes..
In Optimization theory and nonlinear programming [Sun, Yuan] the following is discussed at section 8.2.
Consider the optimisation of f:\mathbb R^n\to\mathbb R with constraints g_j:\mathbb R^n\to\mathbb R, g_j(x) = 0...
Are two objects, accelerating at the same rate, and in the same direction, considered inertial to one another? If so, I will post my resulting question. If not, it's safe to disregard this thread.
Thanks,
Jake
Homework Statement
Forces of 11.8N north, 19.2N east, and 15.9N south are simultaneously applied to a 3.93kg mass as it rests on an air table. What is the magnitude of its acceleration?
What is the direction of the acceleration in degrees? (Take east to be 0 degrees and counterclockwise to be...
I had a question about michelson morley and about sr. Did michelson morley show that there is no preferred direction in space only? Is there a preferred direction in time? Seems like in sr, there is no preferred frame of reference, but does this mean that there is no preferred direction in time...
Homework Statement
[/B]
So here is my question: I asked you about a solution approach/solution for the following task: Two rail paths cross at an angle of 145 °. With a constant speed of 60 km/h, they just drive along their tracks, and each of them repels steam/smoke flags, which, among other...
Homework Statement
What is the magnitude and direction of the electric field at the position indicated by the dot in the figure below? Give your answer in component form in the blanks below.
What is the x-component of the electric field at the indicated point?
Homework Equations
kq/r^2
The...
Hi all, I have two questions about light in Special Relativity. (I'm going to pad these questions out with a few statements about my understanding of length contraction and time dilation, so you can see how I currently think about it and clear up any misconceptions if I've got the basic idea...
SR says that there is length contraction in the direction of movement. This works nicely for light going from the back of the ship to the front. From my perspective, the ship is moving away but that is offset by the ship's contraction.
But things get tricky for light going from the front of the...
Homework Statement
A car traveling at a constant speed of 24.0m/s passes a trooper hidden behind a billboard. One second after the speeding car passes the billboard, the trooper sets off in a chase with a constant acceleration of 3.0m/s^2.
A) How long does it take the trooper to overtake the...
Homework Statement
I can't understand why friction acts radially inwards when a body is rotating on a rough turntable. If the friction is removed, the body would move tangentially, hence it has slipping tendency tangential, not radially outwards, then shouldn't friction act tangentially...
Homework Statement
Homework EquationsThe Attempt at a Solution
I know that, according to the right hand rule, the direction of the field lines for X and Z are anti-clockwise and Y is clockwise. What do I do next? Thank you!
Let's say that we have two guys, each weighs 50 kg. They are pulling a piece of against each other as hard as they can. The tension of the rope will therefore be the force of friction acting on each of them (the same magnitude).
Now, let's say that a third person joins the party and grabs the...
Homework Statement
A constant potential is maintained across a parallel plate capacitor. A dielectric slab is slowly inserted between the plates (width of slab=distance between the plates). What will the direction of force applied by capacitor on dielectric be?
Homework Equations
All relevant...
Angular velocity is the rate of angular displacement about an axis. Its direction is determined by right hand rule.
According to right hand rule, if you hold the axis with your right hand and rotate the fingers in the direction of motion of the rotating body then thumb will point the direction...
Hello,
I'm boy who suddenly been strucked by curiosity on how hand crank generator works and i watch and read some of how to create one, specially this one on youtube:
and i want to create one but i don't have a 3D printer, but i saw some alternative but as i do/design my own coil based on...
I am trying to do some calculation based on a k.p model of GaN proposed by S. Chuang [Phys. Rev. B, 54, 2491]. It is a 8 by 8 Kane model with basis functions:
The 8 by 8 Hamiltonian contain first order of k is
where ##{k_ \pm } = {k_x} \pm i{k_y}##
the reciprocal space and high symmetry...
OK, so my last post seemed meaningless.
Can anyone help with this, I understand some of you say current moves from the positive terminal of a battery to the negative terminal and some say the opposite.
Lets say it is positive to negative just for this question.
If I have a battery that the...
Hi all,
Can anyone help to solve this problem?
Imagine a big plate suspended in the air through three threads with different length.
we know length of each individual thread, and they are 120 degree apart from each other.
How cam we calculate the tilt of the plate and direction of the tilt?
Watching an old Royal Institution Christmas Lecture, given by Prof. Eric Laithwaite in 1974, there was a demonstration of a simple 3-phase induction motor. As the applied voltage was increased, the direction of spin suddenly reversed at about 203 volts. I have never found an explanation for...
Homework Statement
Homework EquationsThe Attempt at a Solution
I am having a little doubt as to how to think of the moving electron as a current .
I am considering the moving electron as a very tiny (infinitesimal ) current element . It is as if when the electron is at A , there is a very...
Homework Statement
There is a magnetic field B=0.02 Tesla and its direction is toward the plane (perpendicular to plane, shown by X X X X X - I'm not sure how to say this direction in English,sorry). we have a copper wire (uniform bar) perpendicular to magnetic field from south to north. we...
I was wondering if it would be feasible to set up something like the following experiment to validate the pilot wave theory. The idea here is to set up a double slit experiment, but control the initial conditions of photons emitted from a source (i.e., their directions) such that one can...
Homework Statement
Two charged balls are placed in point A and B and the distance between them is 9,54cm. Each of the balls are charged with 8,0 x 10^-8 C. Find the scalar value and direction of the electric field in point C placed 5 cm from A and 6 cm from B.
Homework Equations
Cosine Rule...
Outside the battery, in the conductor it is in the direction of conventional current. But what about inside?
Since magnetism and electricity are related, and magnetic field inside a magnet is from South to North (outside it is North to South), i doubted for any correspondence.
Homework Statement
A rod is attached to a wall in such a way it can swivel. In this case: In which direction does the force (of the wall on the rod) point to?
Here are two examples (see under attached files), but the the direction of the force is different. Why? Is maybe one of the pictures...
Homework Statement
Homework Equations
impulse = mv
The Attempt at a Solution
so i found the velocity of the blob of clay now i am trying to find the direction.
i took the xcomponent initial stuff which was
0.04kg*4m/s*cos45 - 0.03kg*3m/s
Then set it to the final x component stuff which i...
Homework Statement
[/B]In this question, it asks for the magnetic field associated with the electromagnetic wave.
Homework EquationsThe Attempt at a Solution
The magnetic field is perpendicular to Electric field but it can be in either x or z direction...how do I choose the direction.I
Hello
Here is the shadow of the edge of a screen. This picture is in one of Mr Feynman's books. (Http://www.feynmanlectures.caltech.edu/I_30.html)
Of course, there is light interference in the edge of the shadow. It's normal. It's diffraction. Mr Feynman explains how to geometrically build this...
I am trying to work out the velocity of the ball in a loop in terms of theta from the horizontal (like a unit circle) as it loses contact with the track. And having a lot of trouble understanding this equation
m*g*sin(theta) = m*v2/r
and this explanation:
The ball will leave the rail when...
Homework Statement
We bind two batteries with voltage 2V and 1.7V with inner resistance 0.2Ω and 0.1Ω in parallel series in such way that we bind each positive poles and negative poles together. What current runs trough the circle? What is the voltage between contact points of the batteries...
Homework Statement
Homework EquationsThe Attempt at a Solution
I have already solved for the magnetic fields everywhere AND THE magnetic field at R>F = (U/2*PI*R)*(I2-I1)
My only problem is i know i use the right hand rule to determine the direction of the magnetic field B as clockwise or...
When can we use the right hand rule to find the direction of a magnetic field from current?
I know that it works for an infinite wire. Does it work for a finite wire? Where does it work and not work?
Homework Statement
Referring to (b) in the picture above: What is the direction of the magnetic force on the electron?
Homework Equations
I use the right-hand rule where by putting your index finger in the direction of the magnetic field and thumb in the direction of the velocity, the middle...
Homework Statement
Cart travels with a mass of 100kg in the 25m/s in the X-Direction and then 20m/s in the Y-Direction. What is the impulse?
Homework Equations
I = m*change in velocity
The Attempt at a Solution
I = 100(20 (j) - 25(i))
I = (2000 (j) - 2500(j)) kg* m/s
Is this correct?
Homework Statement
The problem asks to find the direction of the magnetic field at point P, which is at the center of 2 separate semi-circle wires that form a circle. The current in each wire flows in the same direction (to the right). I attached a picture below.
Homework EquationsThe Attempt...