The Andromeda galaxy is moving toward us at 3.01x10^5 m/s. By how much will the frequency of the 6.17x10^14 Hz hydrogen line be shifted in the galaxy's spectrum?
(Answer is ___x10^11 Hz)

the answer would be c. motion and direction

i hope this : )

the skeletons of most mammals reach a certain size and then stop growing. however, many animals, including some mammals, keep growing throughout their lives. kangaroos, for example, just keep growing and growing until they die. also, the longer an animal lives the greater the chance it might catch some deadly disease.

80cm/s.

24cm/s.

53.3cm/s.

answer///scientific method;