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All physics topics ,PHYSICS for competition exams, physics for RRB,SSC,UPSC,state leve and Technical exams
PHYSICS PHYSICS – Physics is that branch of physical science in which the matter and energy mutually interact to each other. MATTER – That substance which occupies space and possesses mass, that which we can experience from our senses. MASS – Quantity of matter in a substance is called mass. Mass of a thing is always remains fixed. WEIGHT – Weight is that force through which earth attracts a thing. Its unit is Newton. Value of weight is dependent of gravitational acceleration, Hence mass of a thing always remain unchanged but its weight is less at the poles an when we move towards equator weight of a thing increases. ENERGY – Capacity of a physical system to perform work is called Energy. Energy can be experienced through senses. Energy can be transformed into mass. According to Einstein E = Energy M= Mass C = Velocity of light UNITS – Units ...
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