sa physics.com/myct/itermView?offs et= net& Ch 11H Think and Solve 11.41 x previ
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sa physics.com/myct/itermView?offs et= net& Ch 11H Think and Solve 11.41 x previous 16 of 18n Think and Solve 11.41 Using 300,000,000 km for the diameter of Earth's orbit, calculate the speed of light based on Roemer's 1300s estimate In 1676, the Danish astronomer Ole Roemer had one of those "Ahal" moments in science He concluded from accumulated obsevations of eclipses of Jupiters moon at different times of the year that light must travel at a finite speed and needed 1300 s to cross the diameter of Earth's orbt around the Sun. Express your answer to three significant figures and include the appropriate units. Val e Value Units Submit y Answers Gve Part B How does it differ from a modem value for the speed of light? Express your answer as a fraction of the modern value for the speed of light using two significant figures. ?Explanation / Answer
A)
The speed of light = distance/time
speed = 3 *10^8 *10^3/1300
speed = 2.307 *10^8 m/s
the speed of light calculated is 2.307 *10^8 m/s
B)
ratio = cR/cM
cR/cM = 2.307 *10^8/3 *10^8
cR/cM =0.77
the ratio cR/cM is 0.77
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