A Galaxy is moving away from us at 2.5 x 10^7 m/s. What is the frequency of light observed by us if the the wavelength of the emitted light is 500nm?

What would the the frequencies become in Problems 17 and 18 if the galaxy was moving towards us?

Question

A Galaxy is moving away from us at 2.5 x 10^7 m/s. What is the frequency of light observed by us if the the wavelength of the emitted light is 500nm?

What would the the frequencies become in Problems 17 and 18 if the galaxy was moving towards us?

anonymous · Answer

In physics (especially astrophysics), redshift happens when light seen coming from an object that is moving away is proportionally increased in wavelength, or shifted to the red end of the spectrum.

anonymous · Answer

okay, but how do i answer this question?

anonymous · Answer

http://en.wikipedia.org/wiki/Redshift#Redshift_formulae

anonymous · Answer

did that help

anonymous · Answer

not at all :P can you help me how to solve this question please

anonymous · Answer

I need the final answer which would be the frequency and how u got it if you dont mind

anonymous · Answer

..

anonymous · Answer

best i can do now is this link going off to bed sorry that can not more than that http://www.thetechnocratz.com/v2/site/physics_new.pdf they are good study group

anonymous · Answer

thanks