A rocket is to travel from Earth to a nebula 5.45 ly away. At what speed must the rocket travel in order for the Earth–nebula distance to be 3.20 ly, when measured in the reference frame of the rocket? Express your answer as a multiple of c, the speed of light in a perfect vacuum.

Modern Physics
3rd Edition
ISBN:9781111794378
Author:Raymond A. Serway, Clement J. Moses, Curt A. Moyer
Publisher:Raymond A. Serway, Clement J. Moses, Curt A. Moyer
Chapter1: Relativity I
Section: Chapter Questions
Problem 12P: An astronaut at rest on Earth has a heartbeat rate of 70 beats/min. What will this rate be when she...
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  1. A rocket is to travel from Earth to a nebula 5.45 ly away. At what speed must the rocket travel in order for the Earth–nebula distance to be 3.20 ly, when measured in the reference frame of the rocket? Express your answer as a multiple of c, the speed of light in a perfect vacuum.
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