ENGINEERING APPLICATION It has been found that, on
Chapter , Problem 52(choose chapter or problem)
ENGINEERING APPLICATION It has been found that, on average, galaxies are moving away from Earth at a speed that is proportional to their distance from Earth. This discovery is known as Hubbles law, named for its discoverer, astrophysicist Sir Edwin Hubble. He found that the recessional speed v of a galaxy a distance r from Earth is given by v _ Hr, where H _ 1.58 _ 10_18 s_1 is called the Hubble constant. What are the expected recessional speeds of galaxies (a) 5.00 _ 1022 m from Earth, and (b) 2.00 _ 1025m from Earth? (c) If the galaxies at each of these distances had traveled at their expected recessional speeds, how long ago would they have been at our location?
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