A spaceship of proper length 306 m takes 0.70 micros to, Ask an Expert

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Q. What is the length of the shadow cast on the vertical screen by your 10.0 hand if it is held at an angle of 30 degrees above horizontal?

Q. A spaceship of proper length 306 m takes 0.70 µs to pass an Earth observer. Determine the speed of this spaceship as measured by the Earth observer.

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