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Assume the Mars and Earth are in the same plane and that their orbits around the...

Assume the Mars and Earth are in the same plane and that their orbits around the sun are circle(Mars is =230*10^6 km from the sum and Earth is=150*10^6 km from the sun). a.how long would it take a message sent as radio waves from Earth to reach Mars when Mars is nearest Earth? 2 significant figure. b.How long would it take a message sent as radio waves from Earth to reach Mars when Mars is farthest from Earth?
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