A sun-like star is barely visible to naked-eye observers on earth when it is a distance of
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A sun-like star is barely visible to naked-eye observers on earth when it is a distance of 7.0 light years, or 6.6 × 1016 m, away. The sun emits a power of 3.8 × 1026 W. Using this information, at what distance would a candle that emits a power of 0.20 W just be visible?
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Related Book For
College Physics A Strategic Approach
ISBN: 9780134779218
4th Edition
Authors: Randall D. Knight, Brian Jones
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