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Forging: Forging is shaping of metal either by impact or steady compression among a hammer or ram and anvil. Related to hammering or pressing of metal, the main difference among the two is the speed of pressure application. Hammering process makes use of hammer that is energised by gravity, air or stream and the frequent blows of vertically guided ram on metal resting on the anvil, cause the metal to alter its shape.
The potential difference across the terminals of a cell when it is not supplying any current is known as it's emf.
Q. Show the condition for dispersion without deviation? Q. A thin convex length of focal length 0.1m and a thin concave lens of focal length 0.1m are placed coaxially on contact
WORK AND ENERGY 1. Work can be defined as: the force applied in direction of displacement ×. This means that if the force F acts at an angle θ with respect to the direct
Propagation of an Electromagnetic Wave Electromagnetic waves are waves that can travel by the vacuum of outer space. Mechanical waves, not like electromagnetic waves, need the
A ball leaves a girl's hand with an upward velocity of 6 meters per second. What is the maximum height of the ball above the girl's hand? Ans: A ball leaves a girl's hand w
derive an expression for density of states and hence deduce an expression for carrier concentration of metals
Why we are showing work done over a closed path is zero to prove that electrostatic forces are conservative
An object moving with a speed better than the speed of sound is called to be move with a supersonic speed.
Uses of radio isotopes: Used in i)Medicine ii) Industry iii) Agriculture iv) Meteorology and v) Radio active dating.
Q. If 6.25 X 10 18 electrons flow through a given cross-section in unit time, find the current. Solution: Current I = q / t = ne / t = (6.25 X 10 18X 1.6 X 10 -19) / 1 = 1 A
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