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#11th_physics #11th_physics_new #11th_class_physics #11th_class_physics_new #11th_class_physics_new_book #11th_class_physics_new_book_chapter_1 #measurements #chapter_1_lecture_1 #first_year_physics #first_year_physics_chapter_1 #pctb_new_physics_book #dimentional_analysis #11th_class_physics_chapter_1_lecture_5Комментарии: