A 300 m long train passed through a 500 m long tunnel. Both lengths are measured at rest. The train speeds at 4/5 c from west to east through the tunnel. In the tunnel's reference frame: i) What would be the length of the train? ii) What will be the time difference in seeing the end of the tunnel between Siti and Ahmad?

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A 300 m long train passed through a 500 m long tunnel. Both lengths are measured at rest. The train speeds at 4/5 c from west to east through the tunnel.
In the tunnel's reference frame:
i) What would be the length of the train?
ii) What will be the time difference in seeing the end of the tunnel between Siti and Ahmad?

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