hw5_p5405_f06

hw5_p5405_f06 - b)calculate Δ f f for the sun and the...

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HW 5 Phys5405 f06 due 9/28/06 1) JDJ chapter 11 problem 20 2) JDJ chapter 11 problem 21. In part b do just the ﬁrst decay. 3) JDJ chapter 11 problem 22 4) A photon of frequency f leaves the surface of a star of mass M and radius R. a)When the photon is very far from the star, it has a diﬀerent frequency f’. Show that | Δ f f | = GM Rc 2 and calculate the sign of Δ f . You can assume | Δ f f | << 1 in the use of potential energy in your derivation.
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Unformatted text preview: b)calculate Δ f f for the sun and the earth. You can use R s = 6 . 965 × 10 8 , R e = 6 . 378 × 10 6 m and M s = 1 . 986 × 10 30 , M e = 5 . 974 × 10 24 kg for the radii and masses. c) The period of rotation of the sun is 24.7 d. What is the Doppler shift for 500 nm light emitted from the edge of the sun’s disk at the equator? Compare the magnitude of this shift with the gravitational shift. 1...
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This note was uploaded on 12/24/2011 for the course PHYS 5406 taught by Professor Blecher during the Spring '10 term at Virginia Tech.

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