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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 goes as if the entire mass of the system is concentrated at this point and also the external force is operated at his point of translational motion. This point is called as the centre of mass of the system.
(a) Two 40 g ice cubes are dropped into 220 g of water in a thermally insulated container. If the water was initially at25°C, and the ice came directly from a freezer at -15°C,what
Q. What is the density of energy states in metals? Obtain an expression for the density of states for free electron gas in metals. Ans. Density of energy state is define
Making a shadow stick In an open space on the school ground drive a 130 cm stick into the ground and let the children stay a record of the length of the shadow, calculated two
Charge is the characteristic associated with matter due to which it produces and experiences electrical and magnetic effects.
Photons and gravity : It is observed that light is affected by gravity. We can recognize the gravitational behaviour of light from the fact that although a photon has zero rest mas
Describe Air Traffic Collision in details -The air track is also used to study of collisions, both elastic & inelastic. Since there is very minimum amount of energy lost through f
Determine the real position of an air bubble in a glass cube of side 0.3m if the bubble seems to be at a distance of 0.05 m from one face and at 0.15m from the opposite face.
S uppose you have two parallel, metal plates that have an electric field between them of strength 3.0 x 10 4 N/C, and are 0.050 m apart. Consider a point, P, located 0.030 m fr
a. State the Faraday's laws of electromagnetic induction. b. A conducting circular loop is placed in an uniform magnetic field B=0.020 T with its plane perpendicular to the fi
Q Define: specific rotation? Precise rotation for a given wavelength of light at a given temperature is defined as the rotation produced by one-decimetre length of the liquid c
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