lone star roof systems

Consider two stars S 1 and S 2 of masses M 1 and M 2 respectively, revolving around a common centre of mass O. Clearly the two stars constitute a binary system. Let a 1 and a 2 be the radii of revolution. Then, by definition of centre of mass, ..

Many scientists believe that our solar system was formed from a giant, rotating cloud of gas and dust known as the solar nebula. According to this theory, the solar nebula began to collapse because of its own gravity. Some astronomers speculate that a nearby supernova (exploding ..

Formation of Our Solar System - Many scientists believe that our solar system was formed from a giant, rotating cloud of gas and dust known as the solar nebula. According to this theory, the solar nebula began to collapse because of its own gravity. Some astronomers speculate th..

When atoms / groups having lone pair of electrons are bonded by a single bond to the conjugated system, they displace electrons towards multiple bond..

One of the important applications of Newton's law is to estimate masses of binary stars. A binary star is a system of two stars orbiting round their common centre of mass. Any irregularity in the motion of a star indicates that it might be another ..

Universe consists of all matter and all light and other forms of radiation and energy. It consists of everything that exists anywhere in space and time. The universe includes the earth, everything on the earth and within it and everything in the solar system. All stars, includin..

Most elements are formed due to fusion of simple nuclei to give heavier nuclei i.e., nucleosynthesis or nuclear fusion reactions taking place in the stars. Atoms of these elements began to fall together about six billion years ago to form a system, presently called the sol..

>A ballet dancer can vary her angular speed by outstretching her arms and legs. Suppose the dancer is rotating with her legs and arms stretched outward and if she suddenly folds her arms and brings her stretched legs closer, thereby reducing the moment of inertia, her angular velocity increases due..

Introduction - For thousands of years people have looked up at the stars and wondered what lay beyond them. It was once believed that the earth was the center of the universe and that everything moved around it. It was later discovered that the earth moves around the sun. Today, powerful ..

SO 2 is poisonous and irritates the respiratory system of animals and humans. A continuous exposure to concentration of 0.2 ppm lasting for 3-4 days or even 0.5ppm for full day has been reported to damage the lungs and increase the rate of mortality. In plants and grasses, SO 2 also..