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InterviewSolution
| 1. |
Free `^238 U` nuclei kept in a train emit alpha particles. When the train is stationary and a uranium nucleus decays, a passenger measues that the separation betwee the alpha particle and the recoiling nucleus becomes `x` in time `t` after the decay. If a decay takes place when the train is moving at a uniform speed `v`, the distance between the alpha particle and the recoiling nucleus at a time `t` after the decay, as measured by the passenger will beA. `x+upsilont`B. `x-upsilont`C. `x`D. depends on the direction of the train |
| Answer» Correct Answer - C | |