Question:
Satellites orbiting the earth have a finite life and sometimes debris of satellites fall to the earth. This is because
(a) the solar cells and batteries in satellites run out
(b) the laws of gravitation predict a trajectory spiralling inwards
(c) of viscous forces causing the speed of the satellite and hence height to gradually decrease
(d) of collisions with other satellites
Solution:
The correct answer is (c) of viscous forces causing the speed of the satellite and hence height to gradually decrease
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