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Hooke’s law: It states that when the material is loaded within the elastic limit the stress is directly proportional to […]
Battery: It is a galvanic cell (an electrochemical cell) in which the chemical energy is converted into electrical energy. It […]
Cold working of metals
Cold working of metals: In cold rolling the metal is subjected to forces below its recrystallisation temperature to give it a […]
When there are some physical, chemical or biological changes occur in our physical environment it is known as pollution and […]