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Asked by shekhar14351 | 23rd Feb, 2010, 12:28: PM

Expert Answer:

Dear Student

Say the time period of appearence of satillite=t

in this t time  satillite rotates   tX 2pi/Ts  angle . and earth rotates by  tX 2pi/T  angle.

But sum of these angles is 2pi

tX 2pi/Ts      + tX 2pi/TE   =2pi   ==> t(1/Ts    +1/Te)=1  ==>   t=TE*TS/(TE-TS)

Regards

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Answered by  | 23rd Feb, 2010, 05:26: PM

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