 # Friction

Generally accey body surface is rigid (micro seopic view) If we go for a microscopic view the surfaces like. So due to this rigidness the inter locking will occur between the two bodies. When there in contact tis inter locking should be in order to move the body on the other (or surface) this opposition Read more about Friction[…] # Real Valued Functions

GREATEST INTEGER FUNCTION: For any real numbers x, we denote [x], the greatest integer less than or equal to x. For example, [2.45] = 2, [-2.1] = -3, [1.75] = 1, [0.32] = 0 etc. The function f defined by f (x) = [x] for all x ϵ R, is called the greatest integer function.In Read more about Real Valued Functions[…] # Trends in Chemical Properties of Periodic Elements

Ionisation Energy: It is the amount of energy required to remove an electron from the outermost orbit of an isolated gaseous atom. (If given in terms of the amount of work done in removing an electron, the property is called ionization potential.) Units: kJ / mol (for ionization potential, units: eV/atom.) This is denoted by word I. Read more about Trends in Chemical Properties of Periodic Elements[…]

# ESCAPE VELOCITY AND ORBITAL VELOCITY OF SATELLITE

Escape velocity: It is the minimum velocity with which a body must be protected from the surface of the earth so that it escapes from the gravitational field of the earth. We can also say that a body, projected with escape velocity, will be able to go to a point which distance from the earth. Read more about ESCAPE VELOCITY AND ORBITAL VELOCITY OF SATELLITE[…] # Some Standard Real Functions

Constant Function: Let k be a fixed real number. Then a function f (x) given by f (x) = k for all x ϵ R is called a constant function. Sometimes we also call it the constant function k.Identity Function: The function defined by I (x) = x for all x ϵ R, is called Read more about Some Standard Real Functions[…] # Periodic Trends in Properties of Elements

1. Periodicity in valency or oxidation states: Thevalence (or valency) of an element is a measure of its combining power with other atoms when it forms chemical compounds or molecules. The valence of elements is usually (though not necessarily) equal to the number of electrons in the outermost orbitals and/ or equal to eight minus the number Read more about Periodic Trends in Properties of Elements[…] # Energy in Simple Harmonic Motion

A particle executing SHM possesses two types of energy if a particle executes SHM, its kinetic energy changes into potential energy and vice-versa keeping total energy constant (if friction of air is neglected). Kinetic energy: This is an account of the velocity of the particle. K = ½ mv2 = ½ mA2 ω2cos2 (ωt + Read more about Energy in Simple Harmonic Motion[…] # Trends in Physical Properties of Periodic Elements

1. Atomic Radius: It is defined as the distance from the centre of the nucleus to the outermost shell of electrons. For practical purposes, atomic radius can be defined in many ways. a) Covalent Radius: Half of the inter-nuclear distance between two identical or almost identical atoms bonded by a single covalent bond. For a diatomic molecule, Read more about Trends in Physical Properties of Periodic Elements[…]