Light travels at a constant speed of 3.0 x 105km/s. The distance between the Sun

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and the Earth is about 1.5 x 108km. Use the distance = speed x time formula (d = v t) to calculate the time it takes light to travel from the Sun to the Earth. Show your work. Express your result with the appropriate number of significant figures.

Mar 6th, 2015

time = distance/ speed = (1.5x10^8)/ 3.0x10^5 = 0.5x10^3 = 500 sec

Mar 6th, 2015

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Mar 6th, 2015
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