Just do part a, i am seperating it into parts so each will be worth 300 An alien
ID: 1379297 • Letter: J
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Just do part a, i am seperating it into parts so each will be worth 300
An alien spacccraft is flying overhead at a great distance at you stand backyard. You see its searchlight blink on for 0.190 s. The first officer on the tpacecraft measures that the searchlight is on for 12.0 ms. (a) Which of these two measured time in the proper time? Explain your answer, (b) What is the speed of the spacecraft relative to I-arth expressed as a fraction of c? (c) A scientist on Earth measures (he length of the moving spacecraft to be 74.0 m. The spacecraft later lands on Earth and the same scientist measures the length of the now stationary spacecraft. What value does he get?Explanation / Answer
The proper time is always the SHORTEST time between two events, as they happened in the same place.
Thus, the 12.0 ms is the proper time, the one measured by the officer in the spacecraft. [ANSWER]
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