Two fixed navigation beacons mark the approach lane to a star. The beacons are in line with the star and are 40 Mm apart. A spaceship approaches the star with a relative velocity of 0.30 c and passes the beacons
The passage of the ship between the beacons is timed by observers on the beacons. The time interval of the passage is closest to: A) 440 ms
B) 470 ms
C) 420 ms
D) 250 ms
E) 170 ms
A
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