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What Would the Speed of an Observer Be If a Red

Question 21

Multiple Choice

What would the speed of an observer be if a red (4.688 × 10¹⁴ Hz) traffic light appeared green (5.555 × 10¹⁴ Hz) to the observer?

A) 4.445 × 10⁸ m/s
B) 2.219 × 10⁸ m/s
C) 8.438 × 10⁷ m/s
D) 5.548 × 10⁷ m/s
E) 2.890 × 10⁶ m/s

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