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What can you infer about the linear velocity of a satellite in an elliptical orbit as it travels from perigee to apogee?
The linear velocity of a satellite in an elliptical orbit increases as it moves from perigee (closest point to Earth) to apogee (farthest point from Earth) because the gravitational pull is weaker at apogee, causing the satellite to speed up. At perigee, the satellite moves faster due to the stronger gravitational pull from Earth.
How are satellite systems different than terrestrial systems?
Satellite systems transmit data through satellites in space, while terrestrial systems use fixed infrastructure on land like cables and antennas. Satellite systems have wider coverage but can experience latency due to signal travel time to and from space, while terrestrial systems typically offer faster and more consistent data speeds.
Why must communication satellites travel 35000 kilometers above earths surface?
The requirement is to place the satellite in such a way that it appears motionless in the sky, as seen from the surface of the earth. This is a great advantage in satellite communication, because if the satellite appears stationary, then the dish antenna on the ground doesn't have to move to follow the satellite ... the dish can be aimed once, and can stay in the same position permanently. In order to have the satellite appear motionless, it has to follow the 24-hour rotation of the earth. The orbital period of any satellite's revolution (around a much larger body) depends only on the average orbital distance. For the earth, the period of a 238,000-mile orbit (where the moon is) is about 27 days, and the period of an orbit that averages about 22,400 miles is 24 hours. So a communications satellite in an orbit with this average distance will complete one revolution around the earth in 24 hours. Wherever it is right now, it will appear in the same exact place 24 hours from now. This is a "geosynchronous" orbit. But that's not good enough yet. The orbit may have the right average distance, but it may still be very eccentric, ranging from close-in to way-out in the course of 24 hours. If that's the case, then it will move faster when it's closer in, and slower when it's farther out. Watching it from the earth, it'll appear to move back and forth like a pendulum, returning to the same position every 24 hours but making a complete left-right swing every day. This still wouldn't be useful for stationary ground-based dish antennas. So another restriction on the orbit is that it must not only be at the correct average distance, but it must also be very close to a circular shape, so that the satellite's speed in the orbit is nearly constant. And there's yet one more requirement that the orbit has to satisfy. Consider this in your imagination: There can't be an orbit where the satellite circulates over, say, a little 20-mile circle around the North Pole. A satellite orbit has to revolve around the "whole earth", which is a clunky way of saying that the center of the earth has to be in the plane of the orbit. The orbit can "incline" as much as you want ... the satellite can stay over the equator all the time, or swing from North pole to South pole and back again, but the center of the orbit always has to be at the center of the earth. Now you can see the final requirement for a communications satellite: If the orbit is inclined to the equator, then the satellite will appear to swing above and below its average location in the sky every 24 hours, which also makes it hard for a stationary antenna on the ground. The orbit has to be oriented at 'zero inclination', meaning it lies directly above the equator at every point. Now, finally, with a nearly circular, equatorial orbit, of exactly the right size, the satellite appears motionless in the sky, and all those little 18-inch TV dishes on the neighborhood rooftops can be pointed once at the satellite and never need to move. A satellite in this orbit is not only "geosynchronous" (24-hour orbital period), but also "geostationary" ... motionless relative to a point on the earth.
What does 'sat nav' mean?
Global Positioning System (GPS) uses the signals from geosynchronous satellites to provide accurate position information for navigation. As such utilizing GPS for navigation amounts to utilizing satellite navigation ("sat nav"). Note that while GPS, which was developed by the US government is the most widely used satellite navigation system, Russia also has the Global Navigation Satellite System (GLONASS) deployed which can provide essentially the same satellite navigation capabilities - and can be used in along with GPS to get faster and more accurate position information. The EU, Japan, China, and India are also working to deploy a satellite navigation systems.
Could you detect an object travelling in excess of the speed of light.?
No, it is not possible for any object or signal to travel faster than the speed of light according to the laws of physics as described by Einstein's theory of relativity. Any object that appears to be moving faster than the speed of light is a violation of the laws of physics.
How could you make a satellite orbit faster around the earth?
Natural or artificial? A natural satellite like the moon - good luck. Nukes maybe. If they have systems for adjusting their speed and direction then use em', if not then just launch another satellite and deactivate the old one.
A satellite in a low earth orbit moving faster than a satellite in a geosynchronous orbit?
YES As height increases, speed of satellite decreases.
Is data transmitted faster by fiber-optic or satellite?
Fiber Optic.
How does satellite tv compare in quality of reception to DSL?
These are two entirely different things. Satellite providers do offer internet via satellite however. Generally the DSL internet service is more reliable and faster than satellite.
What technological advancements have helped mapmakers developed maps faster and more accurately?
(:computers ans satellite Photography:)
How can a satellite overtake another satellite ahead of it in the same orbit revolving around the earth?
Two satellites in the same orbit around the same central body have the same velocity at every point. The key is "same orbit" ... if that's the case, then it can't happen. What you need is two different orbits, but having a common point ... that is, the orbits intersect at one or two points ... and one of the orbits having greater total energy than the other one. If that's the set-up, then when they approach the common point, the bird with the greater total energy will be moving faster, and will overtake the other one. If you think that's complicated, and hard to get just right, you're totally correct. That's why it was never accomplished until the mid-1960s, and why it takes the Shuttle three days to link up with the Space Station.
What can you infer about the linear velocity of a satellite in an elliptical orbit as it travels from perigee to apogee?
The linear velocity of a satellite in an elliptical orbit increases as it moves from perigee (closest point to Earth) to apogee (farthest point from Earth) because the gravitational pull is weaker at apogee, causing the satellite to speed up. At perigee, the satellite moves faster due to the stronger gravitational pull from Earth.
Who is faster Mike Wallace of the Pittsburgh Steelers or Chris Johnson of the Tennessee Titans?
Chris Johnson appears to be faster.
How fast is digital cable compared to satellite?
Satellite seems to be just a little faster than digital cable. Also outages are less frequent with satellite than they are with cable. If they do occur they are always much shorter in duration than the cable.
What advancements have helped mapmakers develop maps faster and more accurately?
(:computers ans satellite Photography:)
Is dial up connection is faster than broadband?
DSL, Cable modems, wireless internet and satellite internet.
Is it stable to use satellite internet survice?
Yes, it is stable to use satellite internet service. They don't have the best download and upload speed, but are faster and more reliable than dial-up modem.
