Question 198728
Radio signals travel at a rate of {{{3x10^8}}} meters per second. How many seconds will it take for a radio signal to travel from a satellite to the surface of the Earth if the satellite is orbiting at a height of {{{3.6x10^7}}} meters?
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d = rt
t = d/r = 3.6E7/3E8
t = 1.2E-1 = 0.12 seconds.