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Special relativity - time dilation

1. The problem statement, all variables and given/known data

Lights are placed at points A and B, which are 100m apart as measured in the rest frame of the earth. As a rocket moving at speed v = 3/5c, passes point A the light turns on. As the rocket passes point B, the second light turns on.
As read on the rockets clock, the time difference between the events was #916;tr. Clocks synchronized in the rest frame of the earth measure a time interval #916;te between the events.

a) Determine #916;te.
b) Determine #916;tr using time dilation.

2. Relevant equations

#916;te = d/v (where d = 100m)

#916;tr = 1/sqrt(1-(v/c)^2)#916;te3. The attempt at a solution

#916;te = 5.56 x 10^(-7) s
#916;tr = 6.94 x 10^(-7) s

However I'm unsure as to whether I've used the right times for the different values of t.  

    looks good to me, i got the same answers
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