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If they were closer, then they could potentially fall to the ground.
(WillyD)
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∙ 12y ago
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What is angle period of satellite?
The angle of the satellite period, depends on where the satellite is positioned. When you figure out where the satellite is you position the angle to be where and what you need.
What are examples of solar satellites?
In one sense all the planets are solar satellites, that is, they orbit the sun, just as the moon is Earth's satellite. So Mars, Venus, Earth and all the planets are solar satellites.In another sense a solar satellite could be any of Earth's artificial satellites, because most of them use solar panels to generate the electricity they need to keep sending data back to Earth.
Why is the moon called a satellite?
The word "satellite" was in use long before being used to mean "scientific machines orbiting the Earth." It was used for the natural satellites (moons) of planets, for countries in eastern Europe that were dominated by the USSR, and for such things as smaller airport terminals separate from the main one (as in Seattle).Most people now use "satellite" to mean manmade satellites, and use the adjective "natural" when they are talking about moons, or "the Moon." The astronomical definition of a moon or satellite is a substantially smaller body that orbits a larger one. All satellites of planets also orbit the Sun at the same time, but they are considered separately from the asteroids and minor objects that do not orbit a planet but rather circle the Sun on their own.
Where do satellites fly?
Man-made satellites are either in low, medium or high earth orbits, depending on their function. The closest ones, including the International space station, are in a low earth orbit, up to a height of 2000 km. The International Space Station orbits at a height of around 340km, while the Hubble Telescope is around 595km. The advantage of these is that less energy is required to get there, but the disadvantage is that their orbits may decay over time, since there is some drag on the atmospheric gas still at these heights - so these may need a 'boost' every now and then to maintain their orbits. At higher altitudes, satellites will orbit more slowly, taking longer to make one orbit. The medium Earth orbit extends to 35,786km above the Earths surface, from here the high earth orbit begins. At this point, the time taken for a satellite to orbit once around the earth is 24 hours, the same as one day. 35,786km is a special orbit for Geo-stationary satellites. Since they orbit the earth in the same time that it takes the earth to spin once on its axis, it means that the satellite can stay in roughly the same spot over the earth.
Can you determine the mass of the moon if yes then what do we need to know?
The mass of the Moon can be found from a modified form of Kepler's third law of Planetary Motion. You need to know the time taken for the Moon to orbit the Earth and the mass of the Earth. Also you need the distance between the Moon and Earth. Let the orbital period be P Moon's mass = Mm Earth's mass = ME Distance apart = D Gravitational Constant = G Then: Mm + ME = (4pi2/G) x (D3/P2) Note: That equation doesn't show up properly on some pages. To clarify, it involves: pi squared, D cubed and P squared. Also, an artificial satellite orbiting the Moon can be used to find the Moon's mass by the same method: mass of satellite (negligible) + mass of Moon = (4pi2/G) x (D3/P2) D is now the distance of the satellite from the center of mass of the Moon and P is the orbital period of the satellite.
Names of series of american satellites launched in earth?
You can not launch a satellite "in" earth or indeed "into" the Earth. To launch a satellite you need a rocket.
A satellite is projected vertically from an Earth station at what height above the Earth's surface will the force of Earth's gravity on the satellite be only half its value at the earth station?
To answer this question we need to know either the height of the Earth station above the Earth or the gravitational acceleration of gravity present at the Earth station initially.Solving without these values:(1/2)Gm/R2 = Gm/r2whereG is the Gravitational Constantm is the mass of the EarthR is the radius of the Earth Station from the center of the Earth.r is the radius of the satellite where gr=1/2ge2R2 = r2SQRT(2)R=r
What is a geostation satellite?
Geostationary satellites orbit high above the surface of the earth at about 35,000km, directly above the equator. The take the same time to complete one orbit as the earths surface as it rotates meaning it is always above the same point on earth. They are used for TV and telephone signals as well as weather imagery, among other things. A satellites period, the time it takes it to go around the earth, is determined, in part, by its altitude. The further away it is then the longer it will take. You can calculate an altitude where it will take just one day to make an orbit. If this is done then though the satellite orbits the earth it appears to be stationary above one point of the earth. This orbit must be above, or very near to, the equator. For the earth this altitude is approximately 36,000 km (22,000 miles)
How can you find live satellite images in Google Earth?
To find google earth images, you need to go to google first and click on the satellite tab that will show you the views from a satellite rather than the street view or the walking view.
does The moon orbits around Earth, making it a?
An object in an orbit is called a satellite. A satellite can be natural, like Earth or the moon. Many planets have moons that orbit them.
Why would anyone need a satellite phone ?
A satellite phone provides better services and a higher coverage area. A satellite phone can offer coverage that includes the entire earth.
What is the escape velocity for satellite?
If it is close to Earth, it would need a speed of 11.2 kilometers per second to escape from Earth.
Does earth's gravity do any work on satellite revolving around it?
NO. The gravity of Earth, in conjunction with the inertia of the satellite, keeps the satellite revolving around Earth. However, the satellite doesn't get any nearer to the Earth. So, according to the laws of physics, no work is done. (I'm ignoring the fact that satellites sometimes lose height and need to be "boosted" a bit to maintain their orbits. Also, I'm assuming that the satellite's orbit is circular. If the orbit is elliptical the answer is more or less the same, but a bit more complicated.)
Why do satallites have to stay in the equotorial plane?
Staying at the "same point" (i.e., above the same location on Earth) is onlyimportant for a Geosynchronous satellite, which must occupy a very high orbit.Most satellites (and the International Space Station) are in lower orbits, whichmeans they orbit the Earth faster than it rotates, so they don't stay in thesame place.===================================Answer #1:Now to deal with the question . . .If the satellite is going to be used by non-technical people with little 'dishes'on the corner of their house or garage, it's important that they not need tomove their dish to follow the satellite across the sky. If people couldn't "setit and forget it", there would be no Dish network or Direct TV or any of theothers, because very few customers would be willing to do what it takes tokeep their dish tracking the satellite. Sure it could be automated, with amotorized mechanism that constantly steers the dish to follow the satellite.But that would cost 20 times what those dinky dishes cost now, and again,the operators would not "have a business". The only way that this wholescheme of satellite-direct-to-the-home can work is to make the satellitemotionless in the sky. The installer comes to your house, mounts the dish,'finds' the satellite, points the dish in that direction, and locks it permanentlyin that position. That's the only way the business model can work.
How high is England above sea level?
not that high above sea level, does that help, thnks, you need to get a life
Why must scientist carefully calculate and control the speed of a satellite that they intend to orbit the earth?
i dont know but i need the answer.
Why is it useful that a communications satellite takes one day to orbit the earth?
If an artificial satellite can be positioned so that its orbit is exactly circular, and exactly over the equator, and takes exactly one sidereal day to orbit the earth, then an observer on the earth sees the satellite hang perfectly motionless in the sky. This is a big help when you want to receive radio or TV from the satellite, and you're using a high-gain 'dish' antenna that has to stay pointed at the satellite. If the satellite moved in the sky, then you would need some complicated machinery to keep it always pointed in the right direction. But if the satellite appears motionless in the sky, then your dish never has to move ... just set it once and forget it. If the popular TV satellites moved in the sky, there's no way that all those little dishes on the houses could be equipped to track the satellite and still be economically feasible.
