Question

A 128 kbs point to point link is set up between Earth and a rover on Mars. Use the distance between Earth and Mars as 55Gm and that data travels over the link at the speed of light, 3x108 m/s. A camera on the rover takes pictures of its surroundings and sends the pictures to Earth. The pictures are 5 Mb in size. How long would it take a picture to reach the Earth?

Answer 1

Answer:

Explanation:

Time Taken = Transmit + Propagation Delay

Propagation Delay = Distance/Speed of Light

$= \frac{55\times 10^9}{3\times 10^8}\\\\= 183.334 seconds$

Transmit = Size/Bandwidth

$=\frac{5\times 10^6}{128\times 10^3}\\\\= 39.062 seconds$

So, Total time = 183.334+39.062 = 222.396 seconds.