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The molecular theory of magnetism was given by Weber and modified later by Ewing. According to that theory -
Each molecule of a substance is a complete magnet in itself. Though, in a magnetized atom the molecular magnets are randomly oriented to give zero net magnetic moment. On magnetizing, the molecular magnets are realigned in a particular direction leading to a net magnetic moment.
Avogadro constant; L; NA (Count A. Avogadro; 1811) The number of items in a sample substance is equivalent to the number of atoms or molecules in a sample of ideal gas that is
KINEMATIC CHAIN : Refers to an assembly of rigid bodies connected by joints that is the mathematical model for a mechanical system. As in the familiar use of the word chain, the ri
INTRODUCTION: Superconductivity is a phenomenon takes place in certain materials at low temperatures. Characterized by precisely zero electrical resistance. Superconductors have
One mole of an ideal gas at 0°C is compressed adiabatically reversibly to a pressure of 20 times its initial pressure. Evaluate the final temperature.(γ=1.4)
Resistance: Resistance is the opposition to the motion of electrons. This arises as a result of collision of moving electrons. The unit of resistance is "ohm" represented by
Basic principles of spectrophotometry: An absorbance spectrophotometer is an instrument that measures the fraction of the incident light transmitted through a solution
The internal energy change when a system goes from state A to B is 40 kJ/mole. If the system goes from A to B by a reversible path and returns to state A by an irreversible path wh
How are vibrational modes of carbon dioxide molecule represented? Generally the modes are represented through three integers (mnq): a. (moo) represents Symmetric stretching
In this type of capacitors the dielectric consists of one or more layer of extremely thin craft paper which looks very much like cigarette paper. The metal plates consist of alumin
A popular toy on the market some years ago was the water rocket. Water (at 10°C) was loaded into a plastic rocket and pressurized with a hand pump. The rocket was released and woul
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