Question

A radio signal travels at 3. 00  10 8 meters per second. How many seconds will it take for a radio signal to travel from a satellite to the surface of Earth if the satellite is orbiting at a height of 3. 54  10 7 meters? Show your work.

Answer 1

`0.1157\ \text{s}`

Explanation:

`v` = Velocity of radio signal =
`3* 10^8\ \text{m/s}`

`d` = Distance =
`3.47* 10^7\ \text{m}`

Time is given by

`t=(d)/(v)`

`\Rightarrow t=(3.47* 10^7)/(3* 10^8)`

`\Rightarrow t=0.1157\ \text{s}`

Time taken by a signal from the satellite to reach Earth is
`0.1157\ \text{s}`.