As the distance increases, what happens to the numerical value of the velocity of the group of stars? Â Â Â
1.    Calculate V at Km / s, for a galaxy with D = 800Mpc, using the currently accepted H0 value: (H0 = 73.8 km / s / Mpc).
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2.    If we define the average speed, V, as the ratio between the distance traveled, D, and the time, T, that takes that distance, D, calculate the travel time in years, for a galaxy with D = 800Mpc, Using H0 = 73.8 km / s / Mpc
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2.1. Express D in Km, since 1 Mpc = 3.09 x 1019 Km, to obtain the time, T, in seconds.
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2.2. Since 1 year = 3.15x107s, express its result in years (ie, the time T that has taken the galaxy to move from a starting position to its current position, moving with the speed, V, calculated in question 1).
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Posted 08 Jul 2017 02:07 AM
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