An Earth satellite is an object that orbits the Earth, either naturally (like the Moon) or artificially (like communication and weather satellites). Class 11 Physics Gravitation CBSE EXAM 2024-25
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A distant solar system refers to a planetary system located far from our own, consisting of a star and orbiting celestial bodies. Class 11 Physics Gravitation CBSE EXAM 2024-25
Escape velocity is the minimum speed an object needs to break free from a planet’s gravitational pull without further propulsion. Class 11 Physics Gravitation CBSE EXAM 2024-25
Planetary motion theories include Ptolemy’s geocentric model, Copernicus’ heliocentric theory, Kepler’s elliptical orbits, and Newton’s gravitational laws. Class 11 Physics Gravitation CBSE EXAM 2024-25
Binding energy of a satellite is the energy required to separate it from Earth’s gravitational field. Class 11 Physics Gravitation CBSE EXAM 2024-25
Geostationary satellites are used for weather monitoring, global communication, TV broadcasting, navigation, disaster management, and military surveillance. Class 11 Physics Gravitation CBSE EXAM 2024-25
Geostationary satellites enable global communication by providing consistent coverage for broadcasting, internet, and telephony over fixed Earth locations. Class 11 Physics Gravitation CBSE EXAM 2024-25
Gravitational force is universal, attractive, proportional to masses, inversely proportional to distance squared, and dominates large-scale interactions. NCERT Class 11 Physics Gravitation CBSE EXAM 2024-25
Weedicides may affect the health of the person handling the sprayer. Precautions include covering the nose and mouth with a cloth during spraying to minimize health risks. NCERT Class 8 Science Chapter 1 Crop Production and management
The process is called threshing. It is carried out using a machine called a ‘combine,’ which functions as both a harvester and a thresher. NCERT Class 8 Science Chapter 1 Crop Production and Management