 # Relation between Angular Momentum and Moment of inertia

When a body moves along a straight line, then the product of the, mass m and the linear velocity of the body is called the “linear momentum” p of the body (p = m*v), if a body is rotating about an axis, then the sum of the moments of the linear momenta of all the Read more about Relation between Angular Momentum and Moment of inertia[…] # Product of determinants

Let and be two determinants. Then, the product Δ1Δ2 is defined as = This is row-by-column multiplication value for finding the product of two determinants and it is same as the rule of multiplication of two matrices. Since the value of a determinant does not alter by interchanging the rows and columns. So, we can Read more about Product of determinants[…] # Laws of chemical combinations

1. Law of conservation of mass: Given by Lavoisier: “In all chemical changes, the total mass of the system remains constant.”i.e., Matter can neither be created nor destroyed. Ex: 2H2 + O2 = 2H2O. Reactants mass = 4 + 32 = 36 g. Products mass = 2 X (2 + 16) = 36 g. Reactants mass Read more about Laws of chemical combinations[…] # Projectile motion

Projectile motion is a form of motion in which an object or particle (called a projectile) is thrown near the earth’s surface, and it moves along a curved path under the action of gravity only.Motion along Horizontal direction: A body projected from the ground with a velocity u at an angel  with the horizontal. Horizontal components of the velocity Read more about Projectile motion[…] # Minor and Co-factors of determinants

Minor: Let A = [aij] be a square matrix of order n. Then the minor Mij of aij in A is the determinant of the square sub-matrix of order (n – 1) obtained by leaving ith row and jth column of A. Let . M₁₁ = Minor of a₁₁ = . M₁₂ = Minor of Read more about Minor and Co-factors of determinants[…] # Balancing Redox Reactions

A)     Oxidation number method: 1. Write correct formula for each reactant & product. Ex: K2Cr2O7 + HCl → KCl + CrCl3 + H2O + Cl2 2. Write oxidation numbers for all elements K+12Cr+62O-27 + H+1Cl-1 → K+1Cl-1 + Cr+3Cl-13 + H+12O-2 + Cl02 3. Calculate the increase or decrease in oxidation number per atom Oxidation Read more about Balancing Redox Reactions[…] # Pascal’s Law

This law states that pressure in a fluid in equilibrium is the same everywhere, if the effect of gravity can be neglected. Proof: We can show that pressures at any two points C and D in a liquid in equilibrium state of rest in a vessel are the same. Let us imagine a right circular Read more about Pascal’s Law[…] # Rio 2016: Sindhu claims historic silver

PV Sindhu became the first – ever woman Olympic silver medalist from India across all sporting disciplines, Sindhu ranked 10th in the world losing 21 – 19, 12 – 21, 15 – 21 against world no 1. Carolina Marin and settled for silver medal in the women’s singles badminton at the Rio Olympics on Friday. There was one last Read more about Rio 2016: Sindhu claims historic silver[…] # Limit, Differentiation and Integration of Determinant

Limit of a determinant: Let then provided each of nine limiting values exist finitely. Differentiation of a determinant: Let then . Integration of a determinant: Let where a, b, c, l, m and n are constants then . If more than one row (column) of Δ (x) are variable, then in order to find first we evaluate the determinant Δ (x) Read more about Limit, Differentiation and Integration of Determinant[…] # Liquefaction of gases

Discovered by Andrews for CO2 Above a certain temperature, it is impossible to liquefy a gas. The temperature below which a gas can be compressed by applying only pressure is called critical temperature (Tc). The pressure applied to liquefy gas is called critical pressure Pc The volume occupied by one mole of the substance is Read more about Liquefaction of gases[…]