Wednesday, August 17, 2011
A space probe on the surface of Mars sends a radio signal back to the Earth, a distance of 9.78 107 km. Radio?
A space probe on the surface of Mars sends a radio signal back to the Earth, a distance of 9.78 107 km. Radio waves travel at the speed of light (3.00 108 m/s). How many seconds does it take for the signal to reach the Earth?
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