Asked by Anonymous
If the speed of light is 3x10^8m/s and the distance around the earth is 4.5x10^4 km and a plane could travel at half a speed of light, how long would it take for the plane to fly around the earth twice?
Answers
Answered by
Damon
d = 9 * 10^7 meters
time = distance/speed
= 9 * 10^7 meters/ 1.5 * 10^8 m/s
= 6 * 10^-1
= 0.6 seconds
That sounds like very little
but if you are looking at high frequency radio signals, that can be a huge difference in phase between the wave coming to you and the wave reaching you around the earth :)
time = distance/speed
= 9 * 10^7 meters/ 1.5 * 10^8 m/s
= 6 * 10^-1
= 0.6 seconds
That sounds like very little
but if you are looking at high frequency radio signals, that can be a huge difference in phase between the wave coming to you and the wave reaching you around the earth :)
Answered by
Anonymous
Thanks
Answered by
Damon
You are welcome.
Answered by
sally
but the questions says twice. you have just calculated once.
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