First Year Special Relativity Question

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Homework Help Overview

The problem involves two deep-space probes launched from planets A and B, which are 10 light years apart in the reference frame of planet A. The original poster seeks to determine if there exists a reference frame where the events of the probes being launched are simultaneous and occur at the same position, noting that these parts are separate inquiries.

Discussion Character

  • Exploratory, Assumption checking, Problem interpretation

Approaches and Questions Raised

  • The original poster attempts to use the space-time interval and Lorentz transformations to analyze the problem. Some participants inquire about the specifics of the original poster's attempts and suggest that more foundational study may be necessary. Others express confusion regarding the starting point without a specified velocity.

Discussion Status

The discussion is ongoing, with participants exploring different interpretations of the problem. Some guidance has been offered regarding the need for further study, while the original poster indicates progress in isolating variables using Lorentz transformation equations.

Contextual Notes

There is a mention of the need for a velocity to proceed with the problem, which may indicate a constraint in the information provided or assumptions being questioned.

NotAnAstrologer
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Homework Statement


Planets A and B are 10 light years apart in the reference frame of planet A. A deep-space probe is launched from A, and 5 years later (in reference frame A) a similar probe is launched from B. Does a reference frame exist in which these two events (a) are simultaneous and (b) occur at the same position. *Note*: Parts (a) and (b) are separate from each other so, you have to find one reference frame where they are simultaneous and then another where they occur at the same position. Δx = 10 Ly, T@Event 1 = 0 years, T@Event 2 = 5 years.

Homework Equations


In the textbook this is part of the time dilation section so... Tb = γTa, Lorentz Transformations, s2 = (cΔt)2 - Δx2 ?

The Attempt at a Solution


I tried to solve it using the space-time interval but, I think it might have something to do with the Lorentz Transformations and Time Dilation equations.

Thanks for your help.
 
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What exactly did you try? Show your work.
 
vela said:
What exactly did you try? Show your work.
Erased it or threw it out because I thought it was wrong. I still have the diagram I drew though and I wrote down all the givens. Tbh, the more I think about it the more lost I get. No idea where to start without a velocity.
 
Sounds like you need to do a bit more studying then before attempting this problem.
 
vela said:
Sounds like you need to do a bit more studying then before attempting this problem.
+1 on that.
 
Actually I think I figured it out. Ta = Tb, using this knowledge I'm using one of the Lorentz transformation equations to isolate for V.
 

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