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@abhisar @aaronq In space, a stationary light source emits green light at a frequency of 5.50 × 1014 Hz. A spaceship approaches the light source at a speed 1.50 × 107 m/s. What is the frequency of the light that is perceived aboard the spaceship? (Note: The speed of light is 3.00 × 108 m/s.)
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