Quasars are among the most distant objects in the
universe and are moving away from us at very highspeeds, as discussed in Chapter 16. Astrophysicists use
the redshift parameter z to determine the redshift of
such rapidly moving objects. The parameter z is determined
by observing a wavelength  lammda'of a known spectral
line of wavelength lammda(source) on Earth; z  = delta(lammda)/ lammda(source)=
 (  lammda'-lammda(source))/lammda(source). Find the speed of two quasars
having z values of 1.9 and 4.9.

Question

Quasars are among the most distant objects in the
universe and are moving away from us at very highspeeds, as discussed in Chapter 16. Astrophysicists use
the redshift parameter z to determine the redshift of
such rapidly moving objects. The parameter z is determined
by observing a wavelength  lammda'of a known spectral
line of wavelength lammda(source) on Earth; z  = delta(lammda)/ lammda(source)=
 (  lammda'-lammda(source))/lammda(source). Find the speed of two quasars
having z values of 1.9 and 4.9.