Time Dilation: Observer A sees a pendulum oscillating back and forth in a relativistic rocket and measures its period to be TA. Observer B moves along with the rocket and measures the period of the pendulum to be TB. What is true about these two time measurements?
A. TA > TB
B. TA = TB
C. TA < TB
D. TA could be greater or smaller than TB depending on the direction of the motion.
Answer: A
Physics & Space Science
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