Answered: (b) How long does it take sunlight to…

Astronomy

1st Edition

ISBN:9781938168284

Author:Andrew Fraknoi; David Morrison; Sidney C. Wolff

Publisher:Andrew Fraknoi; David Morrison; Sidney C. Wolff

Chapter5: Radiation And Spectra

Section: Chapter Questions

Problem 30E: With what type of electromagnetic radiation would you observe: A. A star with a temperature of 5800...

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Question

(a) The distance to a star is approximately 6.74 ✕ 10¹⁸ m. If this star were to burn out today, in how many years would we see it disappear?
___ years

(b) How long does it take sunlight to reach Earth?
____ minutes

(c) How long does it take for a microwave radar signal to travel from Earth to the Moon and back? (The distance from Earth to the Moon is 3.84 ✕ 10⁵ km.)
______ s

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