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Artificial Satellites
Artificial Satellites are objects launched from earth to orbit earth or other planets. Satellites are used for communication, remote sensing, weather forecasting, and other purposes. This category is for questions about satellites in general or specific satellites.
1,932 Questions
What was the purpose of launching the sputnik 1?
To demonstrate Soviet superiority in rocket booster power and navigational precision ...
making it easier for them to plant a nuclear device on the territory of other countries.
Difference between artificial and natural satellites?
Artificial satellites are man-made objects placed into orbit around Earth for various purposes, such as communication, navigation, weather monitoring, and scientific research. Natural satellites, on the other hand, are celestial bodies that orbit planets or dwarf planets, such as Earth's moon, which occur naturally in the universe.
Images from space probes and artificial satellites show that earth is?
the answer is sphere shaped......
by
Himanshuk darji..............the Indian
What channel is lifetime on bell satellite?
According to bell reps they do not carry it and carrying it will depend on how many customer requests they get for it.
-- The orbital speed (period) of an earth satellite is essentially independent of its mass. Definitely for any artificial satellite, the mass doesn't matter, only the measurements of the orbit. -- If the 'radii' given in the question refer to the radii of the satellites themselves ... the physical cans ... then that doesn't matter either. The only thing that affects the speed in orbit is the size/shape of the orbit, not the size, shape, mass, age, or ethnicity of the satellite. -- So let's assume that these two satellites are both in circular earth orbits, and that the radii given in the question refer to the respective orbital radii ... one orbit has a radius of 7 units, and the other one has a radius of 9 units. According to one of Kepler's laws ... I think it's #3 ... the quantity ( T2 / R3 ) is a constant for all satellites of the same central body, where T = the period of the orbit, R = its radius. For the pair of satellites: TA2/RA3 = TB2/RB3 We're given that RA=7 and RB=9, so TA2/343 = TB2/729 TA2/TB2 = 343/729 ===> TA/TB = sqrt(343/729) ===> TA = TB x sqrt(343/729) This would give us the ratio of the orbital periods, but not the ratio of the speeds that the questions asks for. To get that, we also have to figure in the circumferences of the two orbits. CA = 2 pi RA = 14 pi units, CB = 2 pi RB = 18 pi units. The orbital speed of either one is (circumference / period). Speed of A = (CA/TA) = 14 pi / TA = 14 pi / [TB x sqrt(343/729)] Speed of #2 = (CB/TB) = 18 pi / TB Speed A / Speed B = (14 pi TB) / [18 pi TB x sqrt(343/729)] Speed A / Speed B = 7 / [9 sqrt(343/729)] = 7 / (9 x 0.68594) = 1.13389 (rounded) As expected (hoped), the speed of the satellite in the smaller orbit is greater than the speed of the one in the larger orbit. Kepler and Newton are both happy. I know we're not supposed to get personal with these contributions, but this questioner seems to have a number in mind and an understanding of the principles at work. It's been close to 40 years since I learned this stuff, and after sweating this one out, I would really like to know if my answer is anywhere close, so I'll ask the questioner to please do me a favor and put a comment on my message board. 10-Q
What was The first country to launch an earth satellite or artificial baby moon?
spudnik was the first sattelite lauchned by the ussr but a man hole cover from a nuclear test was the first object launched into space this was done by the usa
What does sputnik have to do with the Internet?
When Russia launched Sputnik it frightened and shocked other countries because Russia had led the way. As a result the American government spend millions of dollars to ensure that it outranked Russia technologically and the result was what we know as the internet today.
What begins the process of solar system formation?
Gas and dust in a nebula is disturbed by an outside force
How many satellites do you need to find your location?
A single satellite can only give you relative location.
3 satellites can give a 2-D positioning/location that includes longitude and latitude.
4 satellites can give a 3-D positioning/location that includes longitude, latitude and altitude. Only 4 satellites can give you absolute location.
How far was sputnik above the earth?
Sputnik had an elliptical orbit. At it farthest distance from the surface of Earth it was 583 miles. At the nearest to the surface it was 134 miles.
How do you connect a satellite receiver with a computer?
This depends on the brand your satellite tv receiver is. If your receiver is for example, Dreambox, than you could connect it to a computer via the RS232 port or via the ethernet port located on the Dreambox receievr. On other brands, this may be different. On some brands you can not connect a tv receiver to a computer. So this is different for all receivers. Also, some special softwares would be needed to establish the conenction between computer a receiver.
Was Skylab a success or a failure at it first launch into orbit?
sure. there no problem int when it launch
What is slant range in satellite communication?
Slant range is the LOS (line of site ) distance between the earth station and the satellite and it is very important in satellite link calculation .For instance to calculate the pathloss slant range would be used.Furthermore slant range is a means to describe the satellite location above the surface of the earth.
Explain why there is only one geostationary orbit?
There is only one geostationary orbit because in order for any mass m to orbit the Earth (ME) the gravitational force:
EQ1: Fg = GmME/r^2
has to be such that it is equal to the required centripetal force for uniform circular motion:
EQ2: Fc = mv^2/r
where v is the velocity of m at radius r (distance from the center of the Earth) and:
EQ3: v = 2(pi)(r)(f)
f is the frequency of rotation in revolutions per second. For geostationary orbit the satellite must be in a fixed position (it must have the same frequency of rotation or angular velocity as the Earth's rotation) relative to the Earth and orbit above the Earth's equator.
The necessary velocity to satisfy Fg = Fc is a specific value, therefore (since pi and f are fixed values) r is the only variable in EQ3. There is a specific orbital radius for geostationary orbit of any mass m.
What part do satellites play in satellite telephone systems and satellite television systems?
it plays as and radio communciatio and it also helps with phones they make poeple watch tv use phones and also use wireless phone and laptops ect....
Who owns the Hubble Space Telescope?
The HST is a collaboration between NASA and the European Space Agency. The Space Telescope Science Institute (STScI) is responsible for the scientific operation of the telescope and delivery of data products to astronomers.
Does the Earth have more natural or more artificial satellites?
Earth has one natural satellite and more than a thousand artificial satellites.
B
( T2/R3 = constant )
What are the six steps in the formation of the solar system?
1)started as swirling could of gas and dust called a Nebula
2)Gravity pulled most the matter towards the center and the cloud spun faster.
3)Fusion starts..... a star is born.
4)Heat from the sun gets rid of gas around the forming planets.
5)Gravity and rotation cause the protoplanets to become denser.
6)Matter circling the planets become moons. Then the left over matter becomes asteroids, meters, and more.
