physical property of nitrogen

If a system consists of two point charges q 1 and q 2 , then the total charge of the system is got by adding q 1 and q 2 . Thus, the charge add up like real numbers (scalars). When we add charges, one should take care of its sig..

1) No point can be at different potentials, so equipotential surface for different potentials can never touch or intersect. 2) Potential energy does not change as a test charge moves over an equipotential surface and hence the electric field can do no work on such a charge. Because of th..

Now, heat the water at 0 0 C further. Observe that the temperature of water rises till the water starts boiling. At sea level the water boils at 100 0 C. As soon as water starts boiling, its temperature remains constant, even if heating is continued. 'The temperature at which a liquid starts boilin..

Springs are simple devices that are commonly used. It is used in shock absorbers in automobiles, in push-back ballpoint pens, in electrical measuring instruments, etc. The spring possesses a simple property by the virtue of which, when compressed or elongated, it tries to attain its origi..

It is a nuclear phenomenon. It is due to the instability of the nucleus. It is a spontaneous, continuous and irreversible process. It is independent of external factors such as pressure, temperature, state of substance, electrical field, magnetic field, catalyst etc. A radioactive ele..

The deliberate addition of a desirable impurity atom to a pure semiconductor to modify its properties in a controlled manner is doping. The impurity atoms added are called dopants. It is worth to note that the electrical conductivity of semiconductors can be increased to a great extent. A..

A radioactive nucleus or element emits an alpha or a beta particle and gets converted into a new nucleus or element. The process of destruction of the original nucleus during the formation of new nucleus due to radioactivity is called Radioactive decay or disintegration. When a α - particl..

Concentration of silicon atoms = 5 x 10 2 8 m - 3 Hole concentration is increased by the amount New electron concentration = 0.45 10 1 0 m - 3 Electron concentration is reduced by the amount Note that the electron concentration has decreased over its intrinsic concentrati..

Self Induction - When a current is established in a conductor, a magnetic field is produced in its vicinity. We can visualize this field in terms of magnetic flux. If steady current flows the number of lines of force at a given place would remain the same. But if the current changes with time, the ..

These are the elements having same atomic number but different mass number. They have the same atomic number because the number of protons inside their nuclei remains the same. The difference in their mass number is due to the difference in their number of neutrons. Since they are neutral isotopes..