ch33-p077 - 77. The time for light to travel a distance d...

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t d c == × × 150 10 300 10 500 10 3 8 4 m m/s s. . . (b) At full moon, the Moon and Sun are on opposite sides of Earth, so the distance traveled by the light is d = (1.5 × 10 8 km) + 2 (3.8 × 10 5 km) = 1.51 × 10 8 km = 1.51 × 10 11 m. The time taken by light to travel this distance is 11 8 1.51 10 m 500 s 8.4 min. 3.00 10 m/s d t c × = = × (c) We take d to be 2(1.3 × 10 9 km) = 2.6 × 10 12 m. Then, t d c × × = 26 10 87 10 24 12 3 . .. m 3.00 10 m / s s h . 8 (d) We take d to be 6500 ly and the speed of light to be 1.00 ly/y. Then,
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This note was uploaded on 06/03/2011 for the course PHY 2049 taught by Professor Any during the Spring '08 term at University of Florida.

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