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Physics, 01.08.2020 18:01 parisw8

A supertrain of proper length 200 m travels at a speed of 0.9 times the speed of light (relative to the tunnel) as it passes through a tunnel having proper length 80 m. In the reference frame of the tunnel, how much longer is the train than the tunnel

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A supertrain of proper length 200 m travels at a speed of 0.9 times the speed of light (relative to...

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