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An imaginary point in a body of matter where, for convenience in certain calculations, the total weight of the body may be thought to be at that point.It is a point where the gravity acts.
CELL EMF: The size of a cell has no bearing on the emf that it will produce, the generated emf being determined solely by the materials used in its construction. Another point
Ferromagnetic substances: on the basis of domain theory A. 1. In a ferro magnetic substance, large no. of domains occur. 2. The direction of magnetisation with in a
Properties of Lines of Flux To make the imaginary lines of flux describe the behaviour of the magnetic field we must give them appropriate properties. Thus lines of flux have
A mild steel ring has a radius of 50mm and a cross-sectional area of 400mm 2 . A current of 0.5 A flows in a coil wound uniformly around the ring and the flux formed is 0.1mWb
Uncertainty principle (W. Heisenberg; 1927): A principle, central to quantum mechanics, that states two complementary parameters (such as position & momentum, energy & time, o
A bar has a 20N weight at one end. You have a weight of 15N to hang somewhere on the bar so that the bar is in equilibrium. Where would you hang the 15 N weight on each of these ba
what are the examples of like and unlike parallel forces?
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
At a distance of 4,000 ft from the launch site, a spectator is observing a rocket being launched. If the rocket lifts off vertically and is rising at a speed of 600 ft/sec when it
What is the raw file size for an image of 80 rows and 100 columns, with pixels on 14 bits and with an extra row for the header? The minimum and maximum values observed in a
IT IS THE CENTRE OF MASS i.e WHERE THE ENTIRE MASS IS SAID TO BE CONCENTRATED
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