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Each physical system has related with it a certain point whose motion characterizes the motion of the whole system. When the system goes under some external forces than this point goes as if the entire mass of the system is concentrated at this point and also the external force is operated at his point of translational motion. This point is called as the centre of mass of the system.
When the current in the primary coil of 400 turns of a magnetic circuit, enhances linearly from10mA to 35mA in 100ms, an e.m.f. of 75mV is induced into the secondary coil of 240 tu
THIN FILM TECHNOLOGIES The various thin technologies currently being developed reduce the amount of light a bsorbing material required in creating a solar cell. This
Capacitor construction: FIXED CAPACITORS Fixed capacitors usually consist of sheets of metal foil between which is sandwiched the dielectric, or alternatively the metal, s
INTRODUCTION: Superconductivity is a phenomenon takes place in certain materials at low temperatures. Characterized by precisely zero electrical resistance. Superconductors have
Stefan-Boltzmann law (Stefan, L. Boltzmann): The radiated power P (it is rate of emission of electromagnetic energy) of hot body is proportional to the radiating surface area,
A gas is compressed from 400 cm3 to 200 cm3 at a constant pressure of 100 kPa. At the same time, 100 J of heat energy is transferred out of the gas. What is the change in internal
Question: If you chafe a rubber rod with rabbit fur thus giving the rod a negative charge and bring the rod near a few bits of neutral paper the rod will attract the bits of pa
Keplers Second Law After studying a wealth of planetary data for the motion of the planets about the sun, Johannes Kepler reasons three laws of planetary motion. Kepler's secon
Define the Cylinders and Heat Bath? Regard as a cylinder 1 m long with a thin, massless piston clamped in such a manner that it divides the cylinder into two equal parts. The
Q. Why does heat makes matter to expand? Answer:- Water contracts as it cools similar to all other liquids until it reaches a temperature of about 4 degrees Celsius at whi
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