
#1
Jul2910, 10:51 AM

P: 251

1. The problem statement, all variables and given/known data
2. Relevant equations L=sqrt(1(v/c)^2))*l t=T/sqrt(1(v/c)^2) 3. The attempt at a solution I'm having a hard time approaching this question. could someone tell me how to approach this question. NOT ASKING FOR ANSWER. never mid guys i got it. i forgot to read it happens in the same frame so t=0 correct? 



#2
Jul2910, 11:37 PM

Emeritus
Sci Advisor
HW Helper
Thanks
PF Gold
P: 11,521

Yup, because the explosions happen simultaneously in Mark's frame and because they occur at equal distances from him.
If the explosions were simultaneous in his frame but he was closer to one planet than to the other, the light from one would reach him earlier than the light from the other planet just because it had less travel time to reach him. 


Register to reply 
Related Discussions  
Relativity of Simultaneity  Special & General Relativity  2  
Simultaneity in Relativity  Special & General Relativity  12  
The Relativity of Simultaneity  Special & General Relativity  22  
Relativity of Simultaneity  Special & General Relativity  25 