Already have an account? Get multiple benefits of using own account!
Login in your account..!
Remember me
Don't have an account? Create your account in less than a minutes,
Forgot password? how can I recover my password now!
Enter right registered email to receive password!
Artificial satellites
1. Satellites help to develop reliable communication links between different countries separated by large distances on the globe. The communications include telephone conversations, fax messages and contact through a INTERNET. Such satellites are called ‘communication satellites'.
2. Many artificial satellites are helping to follow weather changes. With the advance information sent by a satellite about cyclones, typhoons, etc., can be avoided. Such satellites are used for the purpose of ‘weather prediction'.
3. Some satellites can see the areas of forests, deserts on the land and also areas on the ocean and take pictures. With the help of these pictures proper steps are taken to prevent deforestation and expansion of deserts.Collection of large number of fish in certain area of an ocean can be detected by a satellite. This would enable fishermen to catch the fish. Presence of minerals, ores and ground water in a region of the land in a country could be detected from the pictures sent by satellites. Such satellites are called ‘remote-sensing satellites'.
4. Satellites and space-stations are used for exploring planets, stars and galaxies in the universe. Space-shuttles sent by America also behave as a satellites. Experiments conducted in such space-shuttles and space-station promoted the growth of science and technology in the modern world. Satellites have also been used for spying by defence services of country.
what arethe concepts oflight
determine the magnitude of Poynting vector end the energy per unit time delivered to a wire of length land cross section A when electric current I flow in it
A thin rod of length 1 m is fixed in a vertical position inside a train, which is moving horizontally with constant acceleration 4 m/s2. A bead can slide on the rod, and friction
expression for the interference in transmitted light through thin films
Define the term multi-mode fibre shortly. Multi-mode fibre: This type of fibre permits more than one mode to travel by this. As this has to permit more number of modes to tr
state and explain malus law?
Write the mathematical expression for the refractive index in terms of A and D for a prism, explain the symbols. Mention any two factors on which lateral shift depends.
The device which changes chemical energy into electrical energy is called as electric cell. Battery is a host of constant emf but not constant current.
The turning movement of a particle about the axis of rotation is called the angular momentum of the particle and is measured as the product of the linear momentum and the perpendic
a) Describe how capacitance of a capacitor depends on area, distance among the plates and on the dielectric material. b) Draw electric field lines of a (i) positive poin
Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!
whatsapp: +91-977-207-8620
Phone: +91-977-207-8620
Email: [email protected]
All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd