# What is Movement: Definition and 630 Discussions

The labour movement or labor movement consists of two main wings: the trade union movement (British English) or labor union movement (American English), also called trade unionism or labor unionism on the one hand, and the political labour movement on the other.

The trade union movement consists of the collective organisation of working people developed to represent and campaign for better working conditions and treatment from their employers and, by the implementation of labour and employment laws, from their governments. The standard unit of organisation is the trade union.The political labour movement in many countries includes a political party that represents the interests of employees, often known as a "labour party" or "workers' party". Many individuals and political groups otherwise considered to represent ruling classes may be part of, and active in, the labour movement.The labour movement developed in response to the depredations of industrial capitalism at about the same time as socialism. However, while the goal of the labour movement is to protect and strengthen the interests of labour within capitalism, the goal of socialism is to replace the capitalist system entirely.

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1. ### B Coefficient of friction in sea water

Is there any friction coefficient in the sea as there is in ground? I've tried searching but I see results between 0.4 and 25.7 (?). If there's no such thing as a coefficient of friction to water, how do I calculate the amount of force to start moving a X mass object in water?
2. ### Wave movement and particle movement

A wave pulse moves along a stretched rope in the direction shown. Which diagram shows the variation with time t of the displacement s of the particle P in the rope? A B C D my answer was c because i thought that the particle would move in the same way the wave was coming...
3. ### The movement of a package on a conveyor belt

I have tried doing W=-1/2*m*vi^2 and total work = W + friction work
4. ### B Does movement affect H2O freezing temperature?

When water is moving does the actual freezing temperature change or does steam etc not freeze because warmer water keeps getting brought to the surface? Or is there something else going on that lowers the freezing point as long as the water is in motion? There are several reasons for my...
5. ### B Lifespan of a Photon: Debunking the Myth of Time Travel

The fact that a photon moves only through space (this is what I have read, it can be wrong), not time is said to be the reason why it has so long lifespan, much longer than the calculated lifespan of the universe. Is this wrong? if so, please explain why.
6. ### I Exploring Link Movement in X-Y-Z Axis: How Does This Linkage Rotate and Yaw?

i have this linkage as far as happening that This Link make angle between x-y axis and rotate also between x-y axis , meanwhilel yaw( z-axis) am i right ? please make it clear
7. ### B How does Earth's rotation affect our movement?

How is it possible that Earth's rotation doesn't affect our relative velocity? In other words, if I walk in the opposite direction of Earth's rotation, shouldn't I reach destinations faster than if I walk in the same direction? Sorry if the terms are not that accurate, I’m an architect!
8. ### I From what locations do radiated electrons start their movement in Beta decay?

I know that the Heisenberg Uncertainty principle states that the position of an electron is uncertain, however, if an electron is created due to beta decay, then at what location is it more likely to begin its movement? Is it right inside the proton? Is it the outer edge of the proton? Is it...
9. ### Direction of movement and sign of the charged particle

From the picture, the particle experiences upwards force. But how to determine the direction of motion? I think there are two possibilities: if the particle is positive, it moves from Q to P and if it is negative it moves from P to Q. Thanks
10. ### A Discretization of diffusion equation of a fluid in movement

Hello, I want to model the thermal behaviour of a moving heat transfer fluid in 1D, with convective exchanges with the walls. I have obtained the following equation (1 on the figure). I have performed a second order spatial discretization with decentred schemes at the extremities (y = 0 and H)...
11. ### Question involving clockwise angular movement

v=1.00*8=>v=8 rad/s ar=>100*8^2=>ar=64 rad/s^2 at=1.00*4=>at=4 rad/s^2 The only question I have is ar=-64 rad/s^2, not 64 rad/s^2 as I calculated. I believe this is because the wheel is accelerating in a clockwise direction. However this is not indicated by the mathematical equation. How do I...
12. ### I Movement of protons between orbital bands in the nucleus

What would happen if the protons started to have orbital movements with energy gain and loss, changing orbital bands, at the same time as the electrons?
13. R

### "New" theory of human movement as described by Tesla. Right?

Nikola Tesla, the prominent 20th century inventor, stated in his book "My Inventions" that all human movements appear to come from the will but are are actually generated from the outside. He goes on to say that this phenomenon is of incalculable vale to the human race and he urged further study...
14. ### Kinematics of movement subject to a variable acceleration

Can someone guide me how can I find time ?! I don't have any idea. This is a part of a question in Classical Dynamics.
15. ### I Create movement from leveraging the propagation of magmatism

Imagine two electro-magnets about a metre apart aimed at each other. We turn one of them on, and are able to watch the magnetism propagate in slow motion. The moment the magnetism reaches the second electro-magnet, we turn this on (in a manner in which it attracts), and turn the first one...

17. ### Relative Velocity and Angles of Movement (Sears & Zemansky's Exercise)

The official solution says ±25.4°, but I'm having trouble reproducing it. Here is my solution: 1) The components of the velocity of firework F with respect to the ground G in the moment of explosion are the following (Notice, I'm using sin, because the statement says 30.0° from vertical.)...
18. ### Designing a spiral with a certain angle relative to movement direction

I have a disk traveling on the inner blue track (let's say the blue part is the center of the disk). I want to push the disk outside (as the disk is traveling in a circle) to the outer track. The black part is the wall separating the tracks To that end, I've made some calculations, but I have...
19. ### I Receding movement of a stopped object in an accelerating universe?

Imagine we attach an imaginary cosmological scale rope to an object that is very far away from us. Before attaching the string, the object would be receding from us due to spacetime expansion. After attaching it, tension would form in the string and we would eventually stop the object. After...
20. ### Can I move a macro object at a very small distance (around 10 nm)?

Let's say I have a "nearly ideal" surface such as silicon wafer with around 5 nm roughness and I place something on it (with similar surface roughness) - then how can I move this object step by step at abysmal distances of just several nanometers, under 50 or so? I assume bar friction...
21. ### Scotch yoke mechanism movement equation

Hi, I am not an engineer and sorry in advance if I am not correct with the terms. I design out of curiosity this Scotch yoke mechanism (left image) based on a scheme (right image). I looked for some equations to find if there is a relation between the R0 , R to R0 distance (which changes...
22. ### Electron movement in Polyacetylene modeled in quantum device

Researchers at the Center of Excellence for Quantum Computation and Communication Technology released a study published by Nature describing a quantum device that models the motion of electrons in Polyacetylene. The device is not a general purpose quantum processor, but the methods they used...
23. ### B Predicting the movement of fire

I was staring at this barbecue fire. While my family was enjoying the heat, I was wondering why the flames all of a sudden shrink and then resize, and also take different shapes. Is there a way to predict this movement? Just curious :smile:
24. ### I Wave in phonon as "forward and backward" movement vs temperature

My first question here, so maybe not adequate or in the wrong topic, excuse me. I try to understand vibrating light harvesting antenna in biochemistry but it is a question of physics. We talk about a molecule with an emission spectra peak of about 650 nm. In classical physics electrostatic and...
25. ### B Upwards movement -- Lifting weights while standing on a scale

if I move a weight upwards, will the force exerted on my feet change? I tried standing on scales and lifting a weight but nothing changed as the force seemed to be all in my arm muscles and no change in the weight on the scales...
26. ### Creating an Enemy with 2D Linear Movement: Calculating Projectile Angle

Hi, I am a game developer and recently found myself in a situation where I wanted to create an enemy that shoots at you given a set of variables. The game takes place in a top down view so there is no need for gravity acceleration, just 2d linear constant movement. The question to answer is...
27. ### Resulting force of an object with variable movement

v(20)=288000 m/s=80000km/h a=(80 000-0)/(20 -0)=4000 m*s^(-2) F=m*a=0.0005*80 000 which doesn't fit any answers
28. ### The Physics of Wheel Movement: Exploring the Dynamics of Torque and Energy

Why the wheel moves? I intuitively think that it should move to right but I don't really understand why. When AB gets longer by x each end gets longer by x/2 so W goes to right and down. This will create torque and body will move. This explanation seems valid but I can't calculate anything and...
29. ### I Is movement really relative or absolute?

I was discussing in another page this topic with someone. He said it's relative in everything, meaning that energy and force doesn't count. This is obviously wrong because the fact that today we can't (maybe tomorrow we can) know which thing is moving towards the other and which not, doesn't...
30. ### What did Albert Einstein mean by 'Nothing happens until something moves'?

Albert Einstein said, "Nothing happens until something moves. When something vibrates, the electrons of the entire universe resonate with it." I'm reasonably sure that's hyperbole so what was his point?
31. ### Automotive Does vehicle weight have an effect on torque capacity of the gearbox?

Hi, This has long been in my head, I've seen it work out in reality, but I have no idea about the forces involved in this. As I don't have an engineering degree or mathematical knowledge in automotive engineering, I've come here for help. Sorry if I've used some terms where they do not fit, as...
32. ### B Why don't boxers' skulls shatter from the forces of punches?

Hi All, My question is in relation to forces that can come through movement. For example, the skull is stated to take around 520 pounds of force or around 2000N: https://www.virginialeenlaw.com/help/how-much-force-can-a-human-skull-withstand.html However, boxers can punch well in excess of...
33. ### I Angular Movement and Spiralling Motion

Hello, I am currently working on a computer program to move on object undergoing circular motion in a spiral of decreasing radius. I hope this is illustrated clearly below (forgive me but it is a sketch and thus not precise in scale): The scenario is as follows: 1. The object starts angular...
34. ### Question about direction of movement of water molecule

When the boat moves to the left, water molecules below it also move to the left. Is it correct to say the reason is because of Newton's 3rd law? Water molecules provide friction force to the boat so force on boat by water molecules is to the right. By Newton's 3rd law, there will be force on...
35. ### B How Do Points M and O' Move Relative to Point O in Space and Time?

I consider three material points O, O', M, in uniform rectilinear motion in a common direction, so that in relation to the point O, the points O' and M move in the same direction with the constant velocities v and u (u>v>0). Assuming that at the initial moment (t0=0), the points O, O', M were in...
36. ### Movement of a Ball Bearing within a cavity inside a Projectile

Summary:: Question concerning the behavior of a ball bearing inside a projectile fired straight up or at an arc. Within a projectile is a 1-inch cylindrical cavity, inside of which is a steel ball bearing that can freely roll along the length of the cavity. When the projectile is fired...

38. ### Simple harmonic motion (help please)

The first ecuation values i am 99% that is correct. But, in the second and three problem i don't know if my results are ok. The problem number 2 i comprobate with the teacher that te aceleration its correct, so, with this i calculate the velocity. I use like example the second problem for try...
39. ### Rectilineal movement of particle

I tried to resolve this problem with youtube tutorials help, but, i have a many wrong results. The teacher says that the problem requires critics points, so i know that for that points i need a second grade ecuation, but i don't know how interpreter that points. My results: PD: I don't know how...
40. ### Exploring the Variation in Movement Capacity of Individuals

Hello to all forum members, I came here in an attempt to find a solution to a problem that has been "haunting" me for some years. I have been trying for some time to understand mathematically the variation in the movement capacity of individuals, based on their effort. In other words, I would...
41. ### Calculations for the movement of a light beam reflected by a mirror

The only knowledge I have about such reflection questions is theta=2theta. But I missed class when this was thought. Please I need help and guide
42. ### Electromagnetism - movement of a coil in a magnetic field

So my idea was that to reach the equilibrium position, the final moment of force has to be 0 (so in the end the forces will “eliminate” each other). And I found the equation Fm=B*I*l*sinα, which should characterize the force, which affects wire with the current in a magnetic field, and Fleming’s...
43. ### Generating a back and forth movement of an axle

Goal: To have an axle rotate back and forth from one position to the other. We have a motor rotating in one direction How so solve this in a smart/simple way? I'm thinking having 1. one cog on the motor axle, rotating the same way as the motor 2. a second cog connected to the above cog that...
44. ### Upward and downward movement of a rocket with the equation of motion

Hello! I've done the following to solve this problem. a) Here I simply put in the time in the equation, s0 is = 0 and after that it was pretty much done $$s(t) = 42 *1 - \frac {9,81*1^2} {2} = 37,09m$$ b) Now here to see when the rocket reaches it maximum altitude and what height it is...
45. ### I Movement of a guitar string at relativistic speeds

Hey! I'm and undergrad in the third year of my applied physics program. I'm taking a course in Special Relativity, and due to Corona the exam has been replaced by a pretty free project where we delve deeply into a topic related to the course. I'm interested in music, so my professor suggested I...
46. ### A question about an electron’s movement in a DC circuit

I have been thinking of the nature of the electric current , or the motion of electrons in a copper cable of a closed DC circuit. Recently I learned the speed of electron is very slow in the copper cable and in a AC circuit the FREE ELECTRONS are in fact moving back and forth. But in a DC...
47. ### Engineering Simulating the movement pattern of an elevator using a class D chopper

The question: Here's my attempt: However, I got stuck, I don't know what should be connected to the gate of the switches as the duty cycle changes in each case. Should I insert a pulse generator with 0.5% duty cycle for the 1st case, another pulse generator with a duty cycle > 50% (for...
48. ### Ideal gas law problem -- Pneumatic piston movement with air temperature changes

I have come up with the change in height as 170 cm. My professor does not want to solve for the problem for a reason I do not understand. 170 cm is not part of the answer key. The answer according to the answer key is 65 cm. My attempt is: Initial temperature: p=F/A; (50 *9.8) / (pi * 0.05^2)...
49. F

### Total movement of bacteria assuming a random distribution

Hello, I have to find an expression for the total movement of a bacteria ##s##, knowing that the bacteria is placed (centered) on a two side ruler at position ##x=0## (so a negative ##x## value means the bacteria has moved to the left of the ruler) and that the probability it moves to ##x## is...
50. ### Most efficient way to convert rope movement (KE) to rotational KE?

I've got a moving rope that turns a shaft, which then turns a generator to create electricity. Please point me to a good resource that guides me to perform this efficiently. I would like to maximize the conversion of kinetic energy of the pulled rope system into rotational kinetic energy of the...