A clock in a spaceship moving at 0.99c records 1 s (proper time). An Earth observer measures the interval as:

  1. 3.54 s
  2. 14.2 s
  3. 7.09 s
  4. 70.9 s
Answer

C) 7.09 s

t = gamma t0 = 1 1 - 0.99^2 = 7.09 s. SLO P-11-F-05 · Understanding

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