Question

5. You are traveling from star A to the identical star B that is 5.0 A light years away. During the trip, both stars explode and emit the same wavelength. You detect the light while passing in front of another planet O that is halfway between the stars A 2.5 ly 2.5 ly 0 and B. You detect the light coming from the explosion of A as red (A-750 nm) and the light coming from the explosion of B as uv (-250 nm). (a) At what speed (u) are you traveling? (b) When you detect the light coming from the exploding B, you continue your trip to B to help the survivors. How many years will it take in your reference frame to reach to B (i.e., to go from O to B)? (c) How many years do the survivors have to wait between the explosion and your arrival according to themselves?(Hint; Light from the exploding B takes some time to reach you, then you start your trip from O to B)

Answer 1

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