A starship voyages to a distant planet 10 ly away.The explorers stay 4.0 yr, return at the samespeed, and arrive back on earth 26 yr after theyleft. Assume that the time needed to accelerate anddecelerate is negligible.Part AWhat is the speed of the starship?Express your answer using two significant figures.= 0.91SubmitPrevious AnswersPart BCorrectHow much time has elapsed on the astronauts' chronometers?Express your answer using two significant figures.ΜΕ ΑΣΦt = 52.4?Submit Previous Answers Request Answer× Incorrect; Try Again; 5 attempts remainingProvide FeedbackyearsNext >

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Answered: A starship voyages to a distant planet…

Inquiry into Physics

8th Edition

ISBN:9781337515863

Author:Ostdiek

Publisher:Ostdiek

Chapter12: Relativity, Particle Physics, And Cosmology

Section: Chapter Questions

Problem 6Q

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(a) Use the distance and velocity data in Figure 3.64 to find the rate of expansion as a function of distance. (b) If you extrapolate back in time, how long ago would all of the galaxies have been at approximately the same position? The two parts of this problem give you some idea of how the Hubble constant for universal expansion and the time back to the Big Bang are determined, respectively. Figure 3.64 Five galaxies on a straight line, showing their distances and velocities relative to the Milky Way (MW) Galaxy. The distances are in millions of light years (Mly), where a light year is the distance light travels in one year. The velocities are nearly proportional to the distances. The sizes of the galaxies are greatly exaggerated; an average galaxy is about 0.1 MlY across.
▾ Part A A starship voyages to a distant planet 10 ly away. The explorers stay 4.0 yr, return at the same speed, and arrive back on earth 26 yr after they left. Assume that the time needed to accelerate and decelerate is negligible. What is the speed of the starship? Express your answer using two significant figures. ΜΕ ΑΣΦ 20 Submit Request Answer Part B ? How much time has elapsed on the astronauts' chronometers? Express your answer using two significant figures. ΕΠΙ ΑΣΦ VAΣ ? t = Submit Request Answer years
A starship voyages to a distant planet 10 ly away. The explorers stay 1 yr, return at the same speed, and arrive back on earth 26 yr after they left. Assume that the time needed to accelerate and decelerate is negligible.a. What is the speed of the starship?b. How much time has elapsed on the astronauts’ chronometers?
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