Geostationary orbit satellites travel at about ______ km per second.
3
A geostationary satellite orbits the Earth directly above the equator at an altitude of about 35,786 km.
It completes one revolution in exactly the same time the Earth takes to rotate once, that is about 24 hours, so it appears fixed over one point.
Because this orbit is very high, the orbital speed required to stay in it is relatively low compared with low-Earth-orbit satellites.
The orbital speed of a geostationary satellite is approximately 3 km per second (about 3.07 km/s).
Therefore the value that fills the blank is 3.
Speeds like 15, 10 and 25 km/s are far higher than the actual orbital speed at that altitude, so they are incorrect.
Hence the correct answer is 3.
Important Questions from Gravity
Which of the following statement is correct?
I. Gravitation is a weak force unless large masses are involved.
II. The weight is equal to the product of mass and acceleration due to gravity.
What is the reason that the value of g (acceleration due to gravity) becomes greater at the poles than at the equator?
If the acceleration due to gravity on the surface of earth is g, then the acceleration due to gravity on the surface of a planet whose mass is same as that of earth and radius is twice as that of earth is ___________.
A man's mass is 72 kg on the earth. His mass on the moon will be:
At which of the following place, weight of an object is maximum?
