Physics- problem

2009-05-14 2:25 pm
A spaceship travels at uniform velocity, with speed 0.60c relative to the Earth. At noon it passes the Earth; observers on the Earth and on the spaceship agree that it is noon.

(a) At 12:50 pm as read by the spaceship clock, the ship passes an interplanetary space station that is fixed relative to the Earth and where clocks read Earth time. What time is it according to the space station clocks?

(b) How far from the Earth (in Earth co-ordinates) is the station?

(c) At 12:50 pm spaceship time, the ship reports vital information by radio back to Earth. When (by Earth time) does the Earth receive the signal?

(d) The station on Earth replies immediately. When (by spaceship time) is the reply received?

回答 (1)

2009-05-14 4:40 pm
✔ 最佳答案
As the speed of the spaceship is comparable with the speed of light, we have to consider the relativistic effect.


圖片參考:http://i601.photobucket.com/albums/tt95/physicsworld9999/physicsworld04May140839.jpg?t=1242261646

參考: Physics king


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