Question

lesson 2 class xi Q.what is an artificial satellite?why do artificial satellite not fails?
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Answer 1

Answer:

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Any object that people have made and launched into orbit using rockets is called the artificial satellite. Presently, there are over a thousand active satellites orbiting the Earth. The satellite’s size, altitude and design depend on the use of the satellite. These satellites are also fitted with delicate instruments and cameras, made to rotate around planets in pre-fixed orbits and are launched by rockets from the Earth.

Despite the Earth's gravitational pull, satellites don't immediately fall back on Earth as their angular velocity from launch is sufficient that the gravitational pull serves more as a string that keeps the body from being ejected out of orbit. Over time, however, many satellites lose their velocity and face degradation of their orbit, eventually burning up in the atmosphere.

Explanation:

Answer 2

Answer:

Satellites vary in size. Some cube satellites are as small as 10 cm. Some communication satellites are about 7 m long and have solar panels that extend another 50 m. The largest artificial satellite is the International Space Station (ISS). The main part of this is as big as a large five-bedroom house, but including solar panels, it is as large as a rugby field.