Physics, 19.03.2020 22:00, DnsMonsteR7712

2. Galaxy X in the Virgo Cluster has a cosmological redshift in its spectrum of z = 0.003 indicating it is moving away from us at 900 km/s. Galaxy Y has z = 0.015 a) Using z = v/c and our math shortcut, how fast is Galaxy Y moving away from us? (You can review the method in Box 23-2.)

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2. Galaxy X in the Virgo Cluster has a cosmological redshift in its spectrum of z = 0.003 indicating...