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Explain Rolling
Rolling: A pair of cylindrical rollers made of iron or steel rotate in opposite direction with a gap between them which is smaller than the cross section of the piece which is to be rolled. The work piece is inserting into the gap and as it passes among the rolls, it is squeezed, its cross section being progressively reduced. As the working volume remains constant, the result of passing by the rolls would be lengthening of the work piece and a corresponding decrease and shaping of the cross section. ling and Forging
The end of a pipe is inserted into water. A tuning fork is held over the pipe. If the pipe resonates at lengths of 15 cm and 35 cm, what is the frequency of the tuning for
How to convert from only a displacement vs time graph given, to velocity AND acceleration vs time graphs?
what is black body? explain black body radiation with example
This is the virtue of a material resists flow of electric current. It should be as high as possible. When material is subjected to an electrical pressure then will always be a flow
The part of mechanics which works with the explanation of the motion of an object without taking reason of the origin is known kinematics. While, the study of the motion of an obje
What is the effect of torque and equilibrium on taps,doors,handlebars and bicycles?
When a physical property such as charge exists in discrete "packets" rather than in continuous amounts, the property is said to be: a) Discontinuous b) Abrupt c)
Explain the Photoelectric Effect Atomic Models Heinrich Hertz first observed the photoelectric effect in 1887. He noticed that if a photon with enough energy is absorbed by an
ELECTRICAL MACHINES: Efforts are being made at present to develop electrical machines and transformers utilising super conductivity calculators. It shows that if we would use co
A ray of light XY strikes a surface of a mirror ABCD at point P. a) Determine the path of the incident ray X-Y-P and the reflected ray P-Z and show this path in all views. (Hin
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