Suppose a 128-kbps point-to-point link is set up between the Earth and a rover on Mars. The distance from the Earth to Mars (when they are closest together) is approximately 55Gm, and data travels over the link at the speed of light—3 × 108 m/s. (a) Calculate the minimum RTT for the link.(b) Calculate the delay × bandwidth product for the link.(c) A camera on the rover takes pictures of its surroundings and sends these to Earth. How quickly after a picture is taken can it reach Mission Control on Earth? Assume that each image is 5Mb in size.

University Physics Volume 2
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Chapter16: Electromagnetic Waves
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Suppose a 128-kbps point-to-point link is set up between the Earth and a rover on Mars. The distance from the Earth to Mars (when they are closest together) is approximately 55Gm, and data travels over the link at the speed of light—3 × 108 m/s.

(a) Calculate the minimum RTT for the link.
(b) Calculate the delay × bandwidth product for the link.
(c) A camera on the rover takes pictures of its surroundings and sends these to Earth. How quickly after a picture is taken can it reach Mission Control on Earth? Assume that each image is 5Mb in size.

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