Asked Sep 1, 2019

The distance from earth to the nearest star is about 4 x 1016 meters. How long would it take a radio signal traveling at the speed of light, 3.0 x 108 m/s, to make a one-way trip to this star?


Expert Answer

Step 1

Given information:

The distance from earth to the nearest star (d) = 4×1016 m.

Speed of the Radio signal from earth (c) = 3×108 m/s.

The time taken by the radio signal to make a one-way trip (t) =?


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According to the definition of speed, the relation between these quantities is given as: d t

Step 2

Rewriting the above equation for...


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t = C substituting the values, we get: 4 x 1016 t 1.33 x 108 sec 3 x 108 1.33 x 108 sec


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