mathematical models physics

According to this model, an atom can be considered as a sphere of uniformly distributed positive charge in which there are electrons distributed symmetricall..

According to this model, an atom can be considered as a sphere of uniformly distributed positive charge in which there are electrons distributed symmetrically. The electrons must be held by the positive charges by electrostatic forces. The mutual repulsions between the electrons are balan..

(i) Every atom consists of a nucleus containing the entire +ve charge. The whole mass of atom is concentrated at this core. (ii) The size of the nucleus i.e., 10 - 1 5 m is very small compared to the size of the atom (i.e., 10 - 1 0 m). (iii) The atom as a whole is electrically neutral wit..

The scope of physics is very large. Physics deals with a wide variety of disciplines such as mechanics, heat and light. Study of mechanics helps us to know the forces involved in the flight of a bird, walk of a man and so on. The study of heat helps us to know the rise and fall..

Introduction - In the nineteenth century scientists saw enough evidence to prove that each element has its distinctive atom. But all tem atoms contain identical electrons. In spite of the fact that electrons carry negative charge, atoms as whole were found to be neutral. This led to the fact that a..

Compound Microscope - A compound microscope is an optical instrument which is used to magnify very small objects like blood cells, bacteria which otherwise cannot be seen with the naked eye. A Laboratory Model of Compound Microscope The essential parts of a compound microscope are two con..

Between two successive collisions, a molecule moves with uniform velocity. The distance between any two consecutive collisions is called . The average distance traveled by a molecule between successive collisions is called the mean-free path . The molecules do not exert any force of attractio..

Dalton had postulated that matter is made up of atoms, which are indivisible. Thomson was the first to suggest a structure for an atom. According to him, an atom is a positively charged sphere of radius=10 - 1 0 m in which the mass and the positive charge of the atom are uniformly distribu..

In the Bohr model of the hydrogen atom the electron revolves around the nucleus in a path of radius 5.1 x 10 - 1 1 m at a frequency of 6.8 x 10 1 5 revolution per second. What is the value of magnetic field at the center of the orbi..

08. - In the Bohr model of the hydrogen atom the electron revolves around the nucleus in a path of radius 5.1 x 10 - 1 1 m at a frequency of 6.8 x 10 1 5 revolution per second. What is the value of magnetic field at the center of the orbi..