Answered: The Moon is about 3.8 ✕ 108 m from…

The Moon is about 3.8 ✕ 108 m from Earth. Traveling at the speed of light, 3.0 ✕ 108 m/s, how long does it take a laser beam to go from Earth to the Moon and back again (in s)?

An Introduction to Physical Science

14th Edition

ISBN:9781305079137

Author:James Shipman, Jerry D. Wilson, Charles A. Higgins, Omar Torres

Publisher:James Shipman, Jerry D. Wilson, Charles A. Higgins, Omar Torres

Chapter2: Motion

Section2.2: Speed And Velocity

Problem 2.2CE: A communications satellite is in a circular orbit about the Earth at an altitude of 3.56 104 km....

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Question

The Moon is about 3.8 ✕ 10⁸ m from Earth. Traveling at the speed of light, 3.0 ✕ 10⁸ m/s, how long does it take a laser beam to go from Earth to the Moon and back again (in s)?

Definition Definition Rate at which light travels, measured in a vacuum. The speed of light is a universal physical constant used in many areas of physics, most commonly denoted by the letter c . The value of the speed of light c = 299,792,458 m/s, but for most of the calculations, the value of the speed of light is approximated as c = 3 x 10 8 m/s.

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