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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
a) Three charges, every equal to 1 micro coulomb, are placed at the three corners of a square of side 1 m. Find the electric field at the fourth corner. b) Determine the electri
AVERAGE ACCELERATION: The total change in velocity of a body separated by total time taken is known as average acceleration. It is denoted by a ? av or .
Q. What is action of points (corona discharge)? What is its use? The seep out of electric charges from the sharp points on the charged conductor is known as action of points o
Principle of uniqueness of freefall: The idea inside general relativity that the worldline of a freefalling body is independent of its, structure, composition or state. This p
Q. Compare the emf and the potential difference . Comparison of emf and potential difference 1. The difference of potentials among the two terminals of a cell in an open cir
what is physics and how to learn it easlly?
State and illustrate Lenz's law with examples Derive a mathematical expression for a force between two parallel conductors carrying a current.
determination of suger concentration in water by refractive index
What are the characteristics of laser? Characteristics of LASER: The given are the properties of laser that differentiate this from ordinary light as: a. Monochromaticit
Water at 10 Celsius flows at uniform velocity of 0.1 m/sec into a parallel plate channel, which is wide in the third direction. The parallel plates are at 20 Celsius and are 1.0 cm
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