A galaxy in the constellation Ursa Major is receding from Earth at 15,000 km/s. If one of the characteristic wavelengths of the light which the galaxy emits is 550 nm, what is the corresponding wavelength measured by astronomers on Earth? Also, calculate the red shift parameter z of this galaxy.

A galaxy in the constellation Ursa Major is receding from Earth at 15,000 km/s. If one of the characteristic wavelengths of the light which the galaxy emits is 550 nm, what is the corresponding wavelength measured by astronomers on Earth? Also, calculate the red shift parameter z of this galaxy.

College Physics

11th Edition

ISBN:9781305952300

Author:Raymond A. Serway, Chris Vuille

Publisher:Raymond A. Serway, Chris Vuille

Chapter1: Units, Trigonometry. And Vectors

Section: Chapter Questions

Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...

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Concept explainers

Speed of light

The speed at which the light travels in a vacuum is unbiased for both the source and inertial frame of reference of the observer. This was postulated by the physicist, Albert Einstein, by observing the theory of electromagnetism of Maxwell. Also, there was no evidence for the luminiferous aether, that is, the medium for the propagation of light where the electromagnetic field exists.

Question

A galaxy in the constellation Ursa Major is receding from Earth at 15,000 km/s. If one of the
characteristic wavelengths of the light which the galaxy emits is 550 nm, what is the
corresponding wavelength measured by astronomers on Earth? Also, calculate the red shift
parameter z of this galaxy.

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Step 2: Finding the wavelength of light observed by the astronomers on the earth

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Step 3: Calculating the red shift parameter.

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