(a) The distance to a star is approximately 8.20 x10^18 m. If this star were to
ID: 1768689 • Letter: #
Question
(a) The distance to a star is approximately 8.20 x10^18 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 for sunlight to reach Pluto?_______ minutes
(c) How long does it take for a microwave radar signal to travel from Earth to the Moon and back?______ s
(d) How long does it take for a radio wave to travel once around the Earth in a great circle, close to the planet's surface?______ s
(e) How long does it take for light to reach you from a lightning stroke 8.5 km away? ______s
Explanation / Answer
a)no of lightyears in one 1 m=1.05702341
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