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Chapter 6: Q24E (page 1249)

Electromagnetic radiation from a star is observed with an earth-based telescope. The star is moving away from the earth at a speed of 0.520c. If the radiation has a frequency 8.64×1014Hzof in the rest frame of the star, what is the frequency measured by an observer on earth?

Short Answer

Expert verified

The frequency measured by an observer on earth is 4.86×1014Hz.

Step by step solution

01

Definition of frequency

The term frequency may be defined as the number of times something happens in a particular time period.

02

Determine the frequency measured by an observer on earth

The frequency can be measured by an observer on the earth is calculated as

f=c-uc+uf0f=c-0.520cc+0.5208.64×1014Hzf=4.86×1014Hz

Hence, the frequency measured by an observer on earth is 4.86×1014Hz.

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