Examples of natural satellite in the following topics:
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- Natural satellites are celestial objects that orbit a larger body; artificial satellites are manmade objects put in the orbit of the Earth.
- Natural satellites are often classified in terms of their size and composition, while artificial satellites are categorized in terms of their orbital parameters.
- There are also 84 known natural satellites of trans-Neptunian objects.
- Of the inner planets, Mercury and Venus have no natural satellites; Earth has one large natural satellite, known as the Moon; and Mars has two tiny natural satellites, Phobos and Deimos.
- The seven largest natural satellites in the Solar System (those bigger than 2,500 km across) are Jupiter's Galilean moons (Ganymede, Callisto, Io, and Europa), Saturn's moon Titan, Earth's moon, and Neptune's captured natural satellite Triton.
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- Naturally occurring radio waves are made by lightning or by astronomical objects.
- Artificially generated radio waves are used for fixed and mobile radio communication, broadcasting, radar and other navigation systems, communications satellites, computer networks and innumerable other applications.
- Satellite dishes and cable transmission of TV occurs at significantly higher frequencies, and is rapidly evolving with the use of the high-definition or HD format.
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- Using subscripts 1 and 2 to denote two different satellites, and taking the ratio of the last equation for satellite 1 to satellite 2 yields
- We obtain a relationship that can be used to determine the mass M of a parent body from the orbits of its satellites:
- If r and P are known for a satellite, then the mass M of the parent can be calculated.
- This principle has been used extensively to find the masses of heavenly bodies that have satellites.
- Furthermore, the ratio r3/T2 should be a constant for all satellites of the same parent body (because r3/T2=GM/4π2).
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- This frequency range is used for most radar transmitters, microwave ovens, wireless LANs, cell phones, satellite communication, microwave radio relay links, and numerous short range terrestrial data links.
- They are used for television broadcasting, cordless phones, walkie-talkies, satellite communication, and numerous other applications.
- Most satellite-transmitted information is carried on microwaves, as are land-based long-distance transmissions.
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- Other examples of applications of radio wireless technology include GPS units, garage door openers, wireless computer mice, keyboards and headsets, headphones, radio receivers, satellite television, broadcast television, and cordless telephones.
- Mobile Satellite Communications may be used where other wireless connections are unavailable, such as in largely rural areas or remote locations.
- Satellite communications are especially important for transportation, aviation, maritime, and military use.
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- These include: radio broadcasting, broadcast television, two-way radio, communications receivers, radar, cell phones, and satellite communications; as well as other devices such as garage door openers, wireless microphones, bluetooth enabled devices, wireless computer networks, baby monitors, and RFID tags on merchandise.
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- 2: The radial (centripetal) force is constant (like a satellite rotating about the earth under the influence of a constant force of gravity).
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- It can be seen in the orbit of satellites around the earth, the tension in a rope in a game of tether ball, a roller coaster loop de loop, or in a bucket swung around the body.
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- The relationship between the gravitational pull on the satellite from the Earth ($g'$) and the velocity of the space shuttle is: $mg'= \frac{mv^{2}}{r}$ where $m$ is the mass of the space shuttle, $v$ is the velocity at which it orbits around the earth, and $r$ is the radius of its orbit.
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- An example of a mechanical system: A satellite is orbiting the Earth only influenced by the conservative gravitational force and the mechanical energy is therefore conserved.