Science > Physics > Rotational Motion Moment of Inertia of Standard Bodies In this article, we shall study the method of deriving an expression for moment of inertia of a body. Expression for Moment of Inertia of Uniform Rod About a Transverse Axis Passing Through its Centre: Consider a thin uniform rod, of mass M, […]
Science > Physics > Astronomical Physics > Artificial Satellites In this article, we shall study about artificial satellites and their uses. Natural satellites are heavenly bodies revolving around a planet in their fixed orbits. They are comparatively larger in size and their orbits have larger radii. Their surfaces are made of rocky mountains or gas. […]
Science > Physics > Astronomical Physics > The Moon The moon revolves around the earth. it is known as the satellite of the Earth. It is the natural satellite of the earth. It is the nearest heavenly body to the earth. It is the brightest object in the night sky. The average distance of it […]
Science > Physics > Astronomical Physics > Our Solar System The Sun, the eight planets that revolve around it, their satellites, asteroids, and comets all together form our solar system. In the universe, there may be many stars with their own solar system. The sun is the centre of our solar system. All the objects […]
Science > Physics > Astronomical Physics > Stars The stars, the planets, the moon and many other objects in the sky are called celestial or heavenly bodies. The universe includes everything that exists. A cluster of stars is called Galaxy. A galaxy contains billions of stars. Galaxies exist in different shapes. Our galaxy is called […]
Science > Physics > Astronomical Physics > Our Galaxy The stars, the planets, the moon and many other objects in the sky are called celestial or heavenly bodies. The universe includes everything that exists. The branch of science that deals with the study of the universe is called astronomy. The Big Bang Theory is the […]
Science > Physics > Scalars and Vectors > Scalar Product And Vector Product In this article, we shall study two types of products of vectors: a) Scalar product and b) Vector product Scalar Product of Two Vectors: The scalar or dot product of two vectors is defined as the product of magnitudes of the two […]
Science > Physics > Scalars and Vectors > Vector Algebra Resultant of Vectors: A resultant vector is defined as a single vector whose effect is the same as the combined effect of two or more vectors. Notes: The two vectors to be added should have the same nature. i.e. force can be added to force and […]
Science > Physics > Scalars and Vectors > Scalars and Vectors In this article, we shall study scalars and vectors, their characteristics. Scalar Quantities or Scalars: The physical quantities which have magnitude only and which can be specified by a number and unit only are called scalar quantities or scalars. For e.g. when we are […]
Science > Physics > Electrostatics > The Concept of Electric Field When a charge is kept in a medium it sets around it, what is called an electric field. It can be represented by drawing what is called lines of force. If another charge is brought into this region it experiences a force. Due to the field, the […]