Question: In a certain inertial frame two light pulses are emitted, a distance 5 km apart and separated by 5 s. An observer who is travelling,

In a certain inertial frame two light pulses are emitted, a distance 5 km apart and separated by 5 μs. An observer who is travelling, parallel to the line joining the points where the pulses are emitted, at a velocity v with respect to this frame notes that the pulses arc simultaneous. Find v.

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