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: 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[…]
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[…]
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[…]
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 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[…]
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[…]
Let us consider a parallel-faced slab whose cross-sectional area is A and length L. Let its faces be maintained at steady temperatures θ1 and θ2. Heat will flow through the slab from the face at higher temperature θ1 to that at the lower temperature θ2. Let us assume that no heat escapes out from the Read more about One-dimensional Flow of Heat: Coefficient of Thermal Conductivity[…]
Definition: Every square matrix can be associated to an expression or a number which is known as its determinant. If A = [aij] is a square matrix of order n then the determinant of A is denoted by or |A| or . Determinant of a square matrix of order 1: If A = [a11] is a Read more about Evaluation of determinants of 2nd and 3rd Order Matrices[…]
The kinetic gas equation is given as: PV = 1/3 mnc2 P = pressure V = volume M = mass of molecule n = no. of molecules present in the given amount of gas c = root mean square speed. Kinetic energy for one mole of gas is given as c = c1 + c2 + … Read more about Kinetic Gas Equation of an Ideal Gas[…]