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.
Which of the following law states that, "The force between two objects is directly proportional to the product of their masses?"
Which of the following statements about the movement of planets is true?
A. A planet's orbit is elliptical with the Sun at one of two focal points.
B. The orbit of a planet is circular with the sun in the center.
C. The orbit of a planet is elliptical with another planet in one of the two center-points.
D. The orbit of a planet is circular with another planet in the center.
If the mass of a person is 60 kg on the surface of earth then the same person’s mass on the surface of the moon will be:
The centripetal force required to keep the moon in its orbit is provided by which force?
How is the acceleration due to gravity denoted?