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[1]. , , , , , , 1959, . 225. [2]- . , , , World University Service, , 1967, . 239-246 [3]-Raymond A. Serway, PHYSICS For Scientists & Engineers, Saunders Colleg Publishing, Philadelphia, . , , 1990, . 280. [4]- . , . , . , . , & ' ., , , 2001, . 121-125.

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