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OpenStudy (anonymous):
How long would it take a radio wave whose frequency is 7.25* 10^5 Hz to travel from Mars to Earth if the distance between the two planets is approximately 8.00*10^7 km?
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OpenStudy (anonymous):
granted that c=1.7998*10^7 km/hr the orders of magnitude are the same (10^7) therefore you can just divide 8.00/1.7998 to yield #hours
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