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25.3 Exercise 20

Avg difficulty 2.5

There was a major collision of an asteroid with the Moon in medieval times. It was described by monks at Canterbury Cathedral in England as a red glow on and around the Moon. How long after the asteroid hit the Moon, which is 3.84×105 km3 . \text{84} \times \text{10}^{5} \text{ km} away, would the light first arrive on Earth?

OpenStax College Physics 2e, 25.3 The Law of Refraction, exercise 20

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Adapted from College Physics © 2022 Rice University. Licensed under CC BY 4.0. Sources: College Physics 2e, College Physics for AP® Courses 2e. Imported at revision f98d7a7.