TheRealHartwell1734 TheRealHartwell1734

19-10-2017
Physics

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If the planet mars is about 56 million kilometers from earth how long would it take for a radio wave sent from a space satellite circiling mars to reach earth

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29-10-2017

190 seconds. The time the radio wave will take to reach Earth is the distance it needs to go divided by the speed of light which is 299792.458 km/s. 56000000 km / 299792.458 km/s = 186.7958933 s Rounding to 2 significant figures gives 190 seconds.

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