Question: solve this problem 2. Acamera flash on Earth lasts exactly 200 milliseconds in the frame of the observer on Earth. Meanwhile, an alien spacecraft is

solve this problem

2. Acamera flash on Earth lasts exactly 200 milliseconds in the frame of the observer on Earth. Meanwhile, an alien spacecraft is zooming past Earth at a speed of v = 0.8c. From the perspective of the aliens aboard the spacecraft: A. How long does the camera flash appear to last? B. How far do the aliens measure that their ship has traveled during the flash

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