relativity

1. The problem statement, all variables and given/known data Because there is no such thing as absolute simultaneity, two observers in relative motion may disagree on which of two events A and B occurred first. Suppose, however, that an observer in reference frame S measures that event A...

Hi everyone. So my problem lies in that I understand the material covered, but when I attempt any questions it results in an epic fail. Could someone please lend me a hand? For example, could I post a question and have someone walk me through it please? Here goes: Q. Two spaceships A and B...

Is anyone here familiar with the mathematics (ie Einstein Field Equations) of GR. I have a question which is similar in appearance to ''space travel'' problems given in SR, however due to the acceleration involved, I'm sure a solution using the Lorentz equations of SR is flawed. On the other...

What is difference between general and special relativity?

I just started special relativity in school and, being somewhat confused, I found myself asking this question. An observer A is travelling at a substantial fraction of the speed of light relative to observer B. Since they are both moving at that speed relative to one another, how do we know...

Author :Mohammadreza Tabatabaei Source : Doppler phenomenon for electromagnetic waves and new equations for relativity quantum

1) Two spaceships are at rest with a distance x between them and tied together with a string. An observer standing in between the two spaceship sends them both a signal. As soon as the signal reaches each spaceship (same time in the observer frame) both spaceships start accelerating at a...

Hi, I have recently started revising for my relativity exam and don't seem to have grasped it yet. Here is a past exam Q and my attempt at it any, guidance would be greatly appreciated (particularly on part b). 1.(a.) A star is 450 light years from earth. i) what is the minimum time a...

Suppose the space time co-ordinates of two events in inertial frame S are as follows: Event 1: x1=x0, t1=x0/c y1=z1=0 Event 2: x2=2x0, t2= x0/2c y2=z2=0 Show that there exists an inertial frame s' in which these events occur at the same time (i.e t1'=t2') and find the value of time for...

Hi, could somebody please help me to answer the following Relativity question? Rocket A is travelling at 0.5c relative to an earth based observer and Rocket B travels at 0.8c Relative to rocket A. At what speed does rocket B appear to catch rocket A to an earth based observer? We are given that...

which of these is a requirement of the principle of relativity please: a) THE PRINCIPLE OF RELATIVITY ONLY APPLIES TO FREE PARTICLES or b) THE PRINCIPLE OF RELATIVITY REQUIRES KINETIC ENERGY OF PARTICLES TO BE CONSERVED IN A COLLISION

I cant understand time dilation according to the theory time should be less for a moving body but according to the equation dividing factor is always less then 1 and time for moving object will be greater so can anyone help me!

calculate the relativistic momentum of a helium nucleus of rest mass 6.65*10^-27 kg,,moving in the laboratory frame at o.400c.

In 2000, a 20 year old astronaut left earth to explore the galaxy; her spaceship travels at 250000000 m/s. She returns in 2040. About how old will she appear to be?

Is to always the stationary frame of reference (on earth), and t the frame of reference moving relative to the stationary frame? this is how my teacher explained it but I went to some websites that say the contrary. And what if there is a question like "a man 6ft. tall boards a spaceship, that...

please explain me the theory of relativity(general&special).

I was once a firm believer in Einstein's relativities. Now I realize they are illogical, and disproved by experiments. I sincerely want to debate this with educated people. Unfortunately, I only receive negative feedback and mockery from the scientific community. I'll try once more, but will...

8. A meteorite is approaching Earth head on at speed 0.40 c: A missile is fired from earth toward the meteorite to destroy it before it hits the Earth. The missile travels at speed 0.20 c relative to the Earth. (a) How fast does an unfortunate astronaut stranded on the meteorite sees the...

Because there is no such thing as absolute simultaneity, two observers in relative motion may disagree on which of two events A and B occurred first. Supposed, however, that an observer in reference frame S measures that event A occurred first and cause even B. For example, even A might be...

Hello.. i need help with two homework questions if anyone would be so kind. I do not know where to begin on solving these questions. The questions are as follows: 1. If the angular frequencies of waves in a three-dimensional box of sides L generalize to: Ω = πc/L (nx²+ny²+nz²)^1/2 Where all n...