The length of a spaceship is measured to be \( 25 \% \) of its rest length. (a) To three signifi...

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The length of a spaceship is measured to be \( 25 \% \) of its rest length. (a) To three significant figures, what is the speed parameter \( \beta \) of the spaceship relative to the observer's frame? (b) By what factor do the spaceship's clocks run slow relative to clocks in the observer's frame?
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