Do all observers in Minkowski spacetime agree that you graduated high school after you went to elementary school? Briefly, why or why not?
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Do all observers in Minkowski spacetime agree that you graduated high school after you went to elementary school? Briefly, why or why not?
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- Solve the following problem using Lorentz transformations: Two jets of material are ejected in opposite directions from the center of a radio galaxy. Both jets move with a speed of 0.750c relative to the galaxy. Determine the speed of one jet relative to the other.Suppose an alien race on a distant planet tries to send a message to us, with a laser (light). However, we were unaware that there is a stellar-mass black hole almost directly between us and them. How would this complicate our attempts to locate their position in the Galaxy? O Gravitational lensing would make the signal appear to be coming from a different location O The information carried by the laser (light) would be altered O It would not matter The black hole absorbs all of the lightObserver O fires a light beam in the y direction (vy = c). Use the Lorentz velocity transformation to find v′ x and v′y and show that O′ also measures the value c for the speed of light. Assume O′ moves relative to O with velocity u in the x direction.
- A car is moving relative to a pedestrian with a Lorentz factor of 1.45. With the length of the car being 5.7m according to the pedestrian, what's the length according to the driver of the car (he's moving at the same speed of the car) ?How fast does a 235-m spaceship move relative to an observer who measures the ship's length to be 145 m? Express your answer using three significant figures.(Seeing is not the same as observing!) Suppose at time t = 0 you (on earth) simultaneously receive a message (sent via a laser transmission) emitted (event A) by the outpost on Venus (which is 180 Gm away at the time) and a message emitted (event B) by the outpost on Mars (which is 270 Gm away at the time). Each message requires an urgent response that must be received no more than 40 minutes after it was sent. Which message do you respond to first? Explain.
- Is it possible in principle for a human being who has a life expectancy of 70 years to make a round-trip journey to a part of the universe thousands of light-years distant? Explain.A stationary observer, jack, sees two spaceships, A and B, moving towards him from opposite directions at speeds of Va=0.900c and Vb=0.800c respectively. (Let A be on the left and B on the right, with to-the-right be the positve direction.) a) According to an observer on A, what is Jack's velocity? b) According to an observer on A, what is spaceship B's velocity? c) According to an observer on B, what is Jack's velocity? d) According to an observer on B, what is spaceship A's velocity?https://www.compadre.org/PQP/special-relativity/prob2_2.cfm A) What do you observe from your reference frame?B) What does B observe from his reference frame?