Physics – 6.2.2 Stars | e-Consult
6.2.2 Stars (1 questions)
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Given: 1 light-year = 9.5 × 1015 m, Time = 8.3 years
Calculation:
Distance = Speed of light × Time
Speed of light ≈ 3.0 × 108 m/s
Time in seconds = 8.3 years × 365.25 days/year × 24 hours/day × 60 minutes/hour × 60 seconds/minute
Time in seconds ≈ 4.17 × 1012 s
Distance = (3.0 × 108 m/s) × (4.17 × 1012 s)
Distance = 1.251 × 1021 m
Answer: The distance of the galaxy from Earth is 1.25 × 1021 m.