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The Moon is about 3.8 x 105 m from Earth. Traveling at the speed of light, 3.0 x 108 m/s, how long does it take

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The Moon is about 3.8 x 105 m from Earth. Traveling at the speed of light, 3.0 x 108 m/s, how long does it take a laser beam to go from Earth to the Moon and back again (in s)? The same physics was responsible for the noticeable delay in communications signals between lunar astronauts and controllers at the Houston Space Flight Center. S Need Help? Read It

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