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Hubble's law (E.P. Hubble; 1925):
A relationship discovered among distance & radial velocity. Further away a galaxy is away from is, the quicker it is receding away from us. The constant of proportionality is Hubble constant, H0. The cause is interpreted such as the expansion of spacetime itself.
Echo: The sound heard after reflection from an obstacle is known as echo.
Five coulombs of charge are placed on a thin-walled conducting shell. Once the charge has come to rest, the electric potential in the hollow conducting shell is found to be:
INELASTIC COLLISION: "The collision in which total momentum is preserved but total K.E of system is not conserved is known as inelastic collision". It is to be noted that m
Surface tension is described as the force per unit length in the plane of a liquid surface, operating at right angles on both sides of the imaginary line drawn on the surface T
A simple pendulum Tie a cord at least 2 m long to some object like a stone or a small metal ball. Suspend this in a doorway or from a hook in the ceiling and begin it swinging
James Watt was the first inventor.
The superposition theorem is a very useful network theorem. Write its statement
Electrical energy: Electrical energy is the ability of an electrical system to do work. Energy is expended when work is done and the amount of energy used is equal to the wo
define unlike parallel forces with example
MANUFACTURING: Pure carbon is deposited on ceramic substrate by thermal decomposition of hydrocarbon at 1000 0 C. The sheet resistance of film is controlled by contro
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