The diagram shows the Earth rotating on it's axis. The two stars show different locations on the surface... How long does it tak
e for the locations to rotate completely around the Earth and get back to the same spots? *
About 60 minutes (1 hour)
About 24 hours (1 day)
About 1 month (28 days).
About 365 days (1 year)
About 10 years (1 decade)
About 60 minutes (1 hour)
About 24 hours (1 day)
About 1 month (28 days).
About 365 days (1 year)
About 10 years (1 decade)
2 answers:
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Find the given attachment
The motion of the light is a uniform motion with constant speed 
, therefore we can use the basic relationship between speed, space and time:
(1)
where S is the distance covered and t is the time taken. The light takes t=1.3 s to travel from the moon to Earth, therefore by rearranging eq.(1) we can find the distance between the Moon and the Earth:
where S is the distance covered and t is the time taken. The light takes t=1.3 s to travel from the moon to Earth, therefore by rearranging eq.(1) we can find the distance between the Moon and the Earth: