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A spaceship approaches Earth at 0.9 times the speed of light and shines a powerful searchlight onto Earth.How fast will the photons from this searchlight be moving when they hit Earth?
Document Differences
The process of comparing and highlighting the changes or variations between two versions of a text or file.
Earlier Findings
Previous conclusions or results obtained from research or experiments that form the basis for further investigation.
Evolutionary Psychologist
A professional in a discipline that studies how evolutionary theory explains mental and psychological traits—such as memory, perception, or language.
Cognition
The cognitive process through which knowledge and comprehension are gained by means of thinking, experiencing, and sensing.
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