Frames Definition and 631 Threads

Dropped Frames is a multi-album project by American musician Mike Shinoda, currently consisting of three volumes. Dropped Frames, Vol. 1 was released on July 10, 2020, with subsequent volumes following on July 31 and September 18 of the same year. The project was composed interactively with fans on Shinoda's Twitch channel. All three albums were distributed via Kenji Kobayashi Productions, Shinoda's own company capitally related to Machine Shop co. With the exception of the opening track of volume 1, "Open Door", tracks on Dropped Frames are primarily instrumental.

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  1. T

    Lorentz Transformation with Two Moving Frames

    Homework Statement Essentially, a particle is moving downward from the top of a tower at 0.98c, and the tower is moving up at 0.98c. I am to find the apparent height of the tower from the perspective of the particle Homework Equations Δx=γ(Δx′+vΔt′) Δt=γ(Δt′+vΔx′/c2)...
  2. T

    Inertial reference frames and Newton's Laws of Motion

    The first law of motion says that it takes force to accelerate something. The second law of motion says that F=ma. So now my teacher says that the first law is for inertial reference frames, while the second is for non-inertial reference frames. This really annoys me because I don't...
  3. E

    Simple question about time dilation in accelerated reference frames

    If one wants to calculate the elapsed time from the perspective of an object A moving at velocity, v, for time, t, relative to a stationary object B, all you have to do is calculate: \int_{t_o}^{t_f}\frac{t}{\gamma} Of course, \gamma has no dependence on t because v is constant, so we get...
  4. Y

    Length contraction and accelerating frames

    We all know the definition of a rope between two identical accelerating spaceships and how that rope will break assuming they both accelerate with the identical same velocity (as defined from a observer on Earth for example). And it makes sense, thinking of stress. But how do I define a Lorentz...
  5. M

    Frame of Reference: Constant Velocity & Inertiality

    a frame of reference is moving with a constant velocity with respect to a inertial frame of reference,then moving frame will be inertial itself?
  6. J

    Torque (changing reference frames and adding)

    Hello there I have 2 questions: 1. Can one change the coordinate system of torque vectors through a homogeneous transformation matrix with both rotation and displacement? 2. What's the procedure to add two torque vectors about different axes? Thanks in advance, João
  7. J

    Are You an Inertial Observer on a Constantly Moving Turntable?

    An inertial frame is one which is not accelerating. i.e if I'm sitting in an accelerating bus or plane I'm not an inertial observer however if I am in a bus or train traveling at a constant velocity i.e zero acceleration then I am an inertial observer. One thing Id like to ask here is that...
  8. A

    Calculating Time Period for Simultaneous Relativity in All Ref Frames

    Homework Statement Challenge: a rather eccentric group of astronomy students wanted to celebrate the impact of the Shoemaker-Levy comet on Jupiter by holding a party of sufficiently long duration that their celebrations were simultaneous with the impact of the comet in all inertial reference...
  9. A

    What Equation Should Be Used for Accelerating Frames in Relativity?

    Homework Statement A frame is accelerating uniformly along the x-axis relative to an inertial frame (x,y,z) with acceleration a.Find the transformation between the frames given that the origins concide at t=0. Homework Equations The lorentz transformations cannot apply here ,but what...
  10. Y

    Two dimensional collision. Center of mass reference frames?

    Homework Statement [PLAIN]http://online.physics.uiuc.edu/cgi/courses/shell/common/showme.pl?courses/phys211/oldexams/exam2/sp10/fig3.gif A 4.0 kg circular disk slides in the x-direction on a frictionless horizontal surface with a speed of 5.0 m/s. It collides with an identical disk that is...
  11. C

    Why is light speed constant in all reference frames?

    Hey, this is my first post. I am a biology major so I know pretty much nothing about physics, yet sometimes it interests me way more than chromosomes do. So, given that I know nothing about physics, this is probably going to sound like a stupid question. But I've always wondered how it is...
  12. R

    Comparing Sidereal & Synodic Reference Frames

    This website has an animation that shows the difference between sidereal reference frames and synodic. http://www.sumanasinc.com/webcontent/animations/content/sidereal.html The motion of the moon is circular about the earth, yet apparently the moon has an apogee length that is 50,000 km...
  13. A

    Loads on automobile door frames

    What are the kind of loads that act on an automobile door frame while opening, closing other than the load on the hinge?
  14. S

    Noninertial Frames of Reference Question

    Homework Statement A mass of 2 kg lies on a horizontal table that is placed in the back of a truck. The mass is held in position by a string and a force of 6 N acts on it in the -y direction. The truck then accelerates in the +x direction. As a result, an observer in the truck sees that the...
  15. A

    Motion in accel. frames - water in turntable

    Homework Statement A small container of water is placed on a carousel inside a microwave oven, at a radius of 12.0 cm from the center. The turntable rotates steadily, turning through one revolution in each 7.25 s. What angle does the water surface make with the horizontal? Homework...
  16. L

    Boat crossing river problem using reference frames

    Homework Statement A 110-m-wide river flows due east at a uniform speed of 3.3 m/s. A boat with a speed of 8.6 m/s relative to the water leaves the south bank pointed in a direction 37 degrees west of north. What is the (a) magnitude and (b) direction of the boat's velocity relative to the...
  17. E

    Kinetic Energy and Frames of Reference

    From what I can glean, since kinetic energy = 1/2 mv^2, it follows that a doubling of velocity requires a quadrupling of energy. One joule is required to accelerate a 1 kg mass from zero to one meter per second per second. ie 1m/s2. Now, to further accelerate the mass to 2 meters per second...
  18. B

    Are laws of nature really the same in all reference frames?

    Let’ say; “A” can see and measure a stone falls to the Earth let’s say 10 meter per 1 Earth-second. “B” lives at Mercury and can see the same thing. But “B” would do not see the exactly the same, because seen from “B’s” viewpoint time / distance is not the same as for “A”. Let us say...
  19. W

    Frames of Reference and Relative Velocity

    A swimmer who achieves a speed of 0.75 m/s in still water swims directly across a river 72 m wide. The swimmer lands on the far shore at a position 54 m downstream from the starting point. (a) Determine the speed of the river current. (b) Determine the swimmer?s velocity relative to the shore...
  20. C

    Susskind Lecture - accelerate reference frames

    in at 0:47:00 Susskind begins discussing accelerated reference frames and notes that they relate to hyperbolas rather than parabolas. I understand the concept and need for the proper acceleration to be asymptotic at C. Susskind seems to infer that an observer in the accelerated frame will...
  21. P

    Rotated Reference Frames and Angles/Accelerations

    Homework Statement Let's say that there is a bicycle traveling forward and we only see it from behind. As it rolls to turn, it induces some accelerations. If we were to measure those accelerations on the bicycle frame itself, we would see a Lateral Acceleration (lets call it Aym) and and a...
  22. M

    Solving Pinned Jointed Frame Exterior Reactions

    The problem is attached to this post, basically i need the exterior reactions and how to work them out. i know i need to take moments I am just not sure how to work it out. Basically what i worked out is i assumed horizontal members are equally to 1 sum of the horizontal = 0...
  23. J

    What is a Rest Frame and How Does it Relate to Photons and the Speed of Light?

    This has been discussed in a number of threads and in FAQs. I was wondering what constituted a rest frame as nothing in the universe is at rest, if you work the figures out we are moving at around 2.5% c. In another thread I found out that at rest simply meant not accelerating. This means...
  24. M

    Studying Relativity: Speed Limit of c in All Inertial Frames?

    How I studied relativity, we postulated that a particle traveling at c in one inertial frame travels at c in all inertial frame. But now looking through a book, I see that they just postulate that all laws of physics are same in all inertial frames, and that there is a speed limit (c). However...
  25. B

    A basic doubt (about inertial frames)

    Hi This question is taken from the book Classical mechanics by Gregory. Please clear this doubt TIA ------------- Suppose that a reference frame fixed to the Earth is exactly inertial. Which of the following are then inertial frames ? A frame fixed to a motor car which is (i) moving...
  26. O

    Speed of light in non inertial frames

    sorry to bring this up again, i have just started special relativity and the constancy of c is a bit confusing, i get how c is the same in all inertial frames but what about accelerating frames? do observers in acceleration still see c as a constant? i have seen many forum posts and they always...
  27. jaketodd

    Speed of Gravity the Same in All Reference Frames?

    I found this article: http://www.csa.com/discoveryguides/gravity/overview.php" The article says gravity moves at the speed of light. But does gravity do so in any reference frame, like light does? Thanks, Jake
  28. N

    Conservation of energy in ALL frames of reference?

    If all frames of reference are taken as equally valid. when a car moves, to the passengers in the car the world is moving in the opposite direction. Moving the whole world should take a lot more chemical energy than was contained in the gas that was burnt... I know the passengers in the car...
  29. D

    Is planck time the same in all reference frames?

    Quick question: Is Planck time the same in all reference frames? Is it different at, say, half the speed of light than at a relatively stationary point? What about in a severe gravitational field, like a black hole?
  30. S

    Speed of sound, frames of reference

    Homework Statement [PLAIN]http://www.antonine-education.co.uk/Physics%20A%20level/Options/Module_8/Topic_6/cars_4.gif What is the speed of sound, relative to: A - B - C - Homework Equations None. The Attempt at a Solution For B, since B is a stationary reference point...
  31. L

    How Do Moving Charges Behave Differently in Different Reference Frames?

    Consider two point charges in space: one positive(+Q) and other negative(-Q), lying on the y-axis and separated by distance 'r'. In frame A, both charges are at rest so, only attractive electrostatic force (F_elec) acts on both the charges which is defined by coulombs formula. In another frame...
  32. A

    Quick question about inertial frames of reference

    Homework Statement If you are on the merry-go-round going in a circle at constant speed, are you looking at the world in an inertial, or non-inertial frame of reference? How do we tell whether from one's viewpoint, they are looking at something from an interial or non-inertial frame of reference?
  33. W

    Can someone explain non-inertial reference frames

    What is a non-inertial reference frame? how is it defined?
  34. G

    Physical definition of inertial reference frames

    Dear all, I'm trying to understand better why gravity makes impossible to physically define an inertial reference frame. Firstly, we must have an operational procedure that allows us to physically define an inertial reference frame. Secondly, we must show that gravity makes this procedure fail...
  35. maverick_starstrider

    60 frames per second video (venting mostly)

    I understand that I don't "get" the whole HD video thing but regardless, what the HELL is up with video files with 60 fps? One needs an expensive computer to adequately display such a film and for what? Is there really some dumb *** who has tricked himself into thinking he can even SEE the...
  36. V

    What are valid Preferred Frames?

    Supposed, for sake of discussions. There are preferred frames. Could a field (field in the context of higgs field, or other fields) be a preferred frame? What is a valid preferred frame where it is instantaneously to say communication between 100 billion light years distance and not...
  37. R

    Can Special Relativity Explain Accelerating Reference Frames?

    So apparently SR can handle non-inertial reference frames, and there are supposedly some interesting effects that come about, like non-constancy of the speed of light. I was wondering if anyone knew where I could find a treatment of accelerating frames in SR (like a textbook)?
  38. Q

    Magnetic dipole in two reference frames (special relativity problem)

    Homework Statement An EM wave traveling in vacuum has a magnetic field in the lab frame K which is given by \vec{B}(\vec{x},t) = \hat{z} B0 \cos{kx-\omega t} where Bo, k are positive constants and omega = ck. a) A point magnetic dipole, m, where m = \hat{y}m0 (m0 constant) is at rest in...
  39. M

    Calculating Euler Angles from Two Frames of Reference

    Fairly straight forward question. If you have a set of three vectors specifying a frame of reference and a second set of 3 vectors stating another frame of reference. How do you get the Euler angles associated with that rotation? More generally I am considering the relative orientation of one...
  40. M

    Q: Inertial Frames & Detecting Motion

    In a true inertial frame inside a train compartment, it is impossible to do an experiment that can tell you if you are moving or not. This is a key consequence of Newton's Laws Of Motion. However, if someone had a neutrino detector, or a Higgs detector (assuming they exist), wouldn't it be...
  41. Jonnyb42

    How are Christoffel symbols different in rotating reference frames?

    A very important idea in General Relativity is, same laws in all reference frames. How does that work in rotating reference frames? Jonny
  42. S

    Does the Lorentz Force Magnitude Change Between Inertial Frames?

    Sorry if I should be posting as homework, but it's not homework anymore and I'm just curious about the answer. My question is simple and doesn't require answering the actual homework question I had. If there is a force on a charge in one inertial frame of reference, will there also be a force...
  43. S

    Calculating Light Travel Time in a Moving Reference Frame

    If I am standing at the bottom a spaceship of a Length L moving at a certain speed v (let's say half light speed so that relativistic effects aren't negligible), how would I go about calculating how long it would take the light beam to reach the top of the spaceship? In Newtonian mechanics...
  44. L

    Space Probe vs the Sun - Relativistic Frames of Reference

    I've had a good search through the archives and haven't found an answer to this question. Many apologies if this is old ground. . . Having read the threads on the Pioneer Anomaly a quick question to which I'm sure there is very simple answer (I just don't know what it is !): When...
  45. P

    Acceleration of a Particle in Frames S1 and S2

    Homework Statement the acceleration of a particle as seen from 2 frames s1 and s2 is 4 , what can be the value of acceleration between s1 and s2 Homework Equations The Attempt at a Solution the answer to this question is anything between 0 to 8 , but i do not know the reason , pl...
  46. P

    Comp Sci JavaScript Problem: Code Access Between Frames

    Homework Statement I'm required to make a page that has the following format: Left Frame Items with prices and check boxes next to them An "Update Order" button at the bottom so the order details on the Right Frame can be updated. Right Frame A "receipt" form with all the...
  47. N

    What is the relative velocity of the two reference frames?

    Homework Statement A particle as observed in a certain reference frame has energy 5GeV and momentum 3GeV. what is the energy in a frame in which its momentum is equal to 4GeV/c? what is its rest mass? what is the relative velocity of the two reference frames? Homework Equations The Attempt at a...
  48. nismaratwork

    Can Carbon Fiber Revolutionize Mass Car Production?

    http://news.blogs.cnn.com/2011/03/09/japanese-company-announces-breakthrough-in-carbon-fiber-technology/ Is this really feasible? I was under the impression that mass production of carbon fiber structures like this was still too slow and the fiber too expensive to make? Obviously I'm...
  49. B

    Right handed frames and Orientation

    My text says, "Note that in an arbitrary n-dimensional vector space, there is no well-defined notion of "right-handed", although there is a well defined notion of orientation." I don't see why. An n frame (a1,a2,...,an) is called right handed in R^n if det[a1 a2 ... an] > 0, but I guess we'd...
  50. E

    Photons & Frames of Reference.

    I accept that the FAQ section is there to cut down on repetitive questions, but this arises out of an answer in the FAQs. Would this line of reasoning not lead to the conclusion that, even without an inertial frame of its own, a photon would not be able to be stationary relative to itself?
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