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A girl throws a 0.1 kilogram ball at a wall.
The ball hits the wall perpendicularly with a velocity of 5 meters per second and then bounces straight back with a velocity of 4 meters per second.
The change in the momentum of the ball is:
Ans - 0.9 Kilogram-meters per second
An elementary particle is: (1)An element present in a compound (2)An atom present in an element (3)A sub-atomic particle (4)A fragment of an atom Ans: (3)A s
Can any heat exist without some source of friction?
Define the graded index multimode fibers intermodal dispersion specifically. In graded index fibers, the index of the core material slowly raises and turns into maximise at the
It is the electric dipole moment induced in a system, such as an atom or molecule, by an electric field of unit strength.
Unit of Capacity: The unit of capacity of a capacitor is known as farad (f). It is given by a relation. q = cv.
Materials are an essential part of an engineering study. An engineer requires materials to provide shape to his concept and design. Selection of the right material job in the first
Q. Describes the construction of a 'Nicol Prism' and explains its action in converting UPL into PPL. Sol. Nicol Prism: This is the most simple and elegant polarizer and
A jogger runs at a constant rate of 10.0 m every 2.0 s. The jogger starts at the origin, and runs in the positive direction for 3600.0 s.The figure below is a position-time graph s
Extrusion: It is a metal working process that makes long lengths of uniform cross sectional area from a metal billet by causing the latter to flow under hydrostatic pressure by a
A steam bath An evaporating dish and steam bath can be contrived from a saucer and a tin. Scallops are cut out of the top of the tin to permit the steam to escape
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