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Write functions of Military satellite and Navigational satellite. - Science and Technology 1

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प्रश्न

Write functions of Military satellite and Navigational satellite.

टिप्पणी लिखिए

उत्तर

  1. Military satellite: These satellites collect information for security aspects of the nation.
  2. Navigational satellite: These satellites help in locating any place on earth’s surface by fixing the location in terms of its precise latitude and longitude.
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अध्याय 10: Space Missions - Answer the Following

संबंधित प्रश्न

Answer the question:

What is meant by the orbit of a satellite? On what basis and how are the orbits of artificial satellites classified?


If the height of a satellite completing one revolution around the earth in T seconds is h1 meter, then what would be the height of a satellite taking  \[2\sqrt{2} T\] seconds for one revolution?


Mahendra and Virat are sitting at a distance of 1 metre from each other. Their masses are 75 kg and 80 kg respectively. What is the gravitational force between them? G = 6.67 x 10-11 Nm2/kg


Write the proper name of the orbits of satellites shown in the following figure with their height from the earth’s surface.


A group of students from COEP Pune sent a small satellite _______ through ISRO in 2016.


The function of a satellite launcher is based on Newton's second law of motion.


Calculate the critical velocity of the satellite to be located at 35780 km above the surface of earth.


What is Medium Earth Orbit?


Distinguish between:

High Earth orbit - Medium Earth orbit.


Note the relationship between the entries in all the three columns in the table and rewrite the table.

Column-1
(Location)
Column-2
Height from the earth’s surface (km)
Column-3
g (m/s2)
Earth’s surface (average) 8.8 0.225
Mount Everest 36.6 9.81
Maximum height ever reached by manmade balloon 400 9.8
Orbit of a typical weather satellite 35700 9.77
Orbit of communication satellite 0 8.7

Why are some satellites called geostationary?


Numerical problem.

Calculate the speed with which a satellite moves if it is at a height of 36,000 km from the Earth’s surface and has an orbital period of 24 hr (Take R = 6370 km) [Hint: Convert hr into seconds before doing calculation]


Numerical problem.

At an orbital height of 400 km, find the orbital period of the satellite.


Write down the formula of orbital velocity.


Give scientific reasons.

The geostationary satellite is not useful in the study of polar regions.


The height of medium earth orbit above the surface of the earth is ______.


Write the name of small satellite made by a group of students from COEP (College of Engineering, Pune) sent to the space through ISRO in 2016.


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