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# Unless indicated otherwise, assume the speed of | Ch 16 - 53E ISBN: 9780321675460 31

## Solution for problem 53E Chapter 16

University Physics | 13th Edition

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Problem 53E

Unless indicated otherwise, assume the speed of sound in air to be v = 344 m/s. How fast (as a percentage of light speed) would a star have to be moving so that the frequency of the light we receive from it is 10.0% higher than the frequency of the light it is emit-ting? Would it be moving away from us or toward us? (Assume it is moving either directly away from us or directly toward us.)

Step-by-Step Solution:

Solution 53E Introduction We will use the formula of doppler effect of light to calculate the speed of the star. Step 1 (a) The doppler effect in the light is given by fr= c+vfs Let us now consider that the source frequency is f . Since the frequency measured by the receiver is f is s r 10% then we have f =rf + s.1f = s.1f . s So from the above equation we have So the star would have to move with 4.8% of the speed of the light.

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##### ISBN: 9780321675460

University Physics was written by and is associated to the ISBN: 9780321675460. The answer to “Unless indicated otherwise, assume the speed of sound in air to be v = 344 m/s. How fast (as a percentage of light speed) would a star have to be moving so that the frequency of the light we receive from it is 10.0% higher than the frequency of the light it is emit-ting? Would it be moving away from us or toward us? (Assume it is moving either directly away from us or directly toward us.)” is broken down into a number of easy to follow steps, and 77 words. Since the solution to 53E from 16 chapter was answered, more than 243 students have viewed the full step-by-step answer. The full step-by-step solution to problem: 53E from chapter: 16 was answered by , our top Physics solution expert on 05/06/17, 06:07PM. This full solution covers the following key subjects: light, moving, Toward, directly, away. This expansive textbook survival guide covers 26 chapters, and 2929 solutions. This textbook survival guide was created for the textbook: University Physics, edition: 13.

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