Light reaching the back of the car instantly rings a bell

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Reference no: EM13659252

A 31 m-long rocket train car is traveling from Los Angeles to New York at 0.7c when a light at the center of the car flashes. When the light reaches the front of the car, it instantly sounds a siren. Light reaching the back of the car instantly rings a bell. What is the magnitude of the time among these two events, for this observer?

Reference no: EM13659252

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