Radio signals travel at a rate of 3x10^8 meters per second period how many seconds will it take for a radio signal to travel satellite to the surface of earth if the satellite is orbiting at a height of 4.2x10^7 meters? (Hint: Time is distance divided by rate.)
A. 1.26 x 10^16 seconds
B. 1.26 x 10^15 seconds
C. 1.4 x 10^1 seconds
D. 1.4 x 10^-1 seconds