surface tention It is the effect of the surface of a liquid that makes it to behave as a flexible paper , Vescosity It is a resistant of a fluid to the stess which obligate it to move يا جماعة انا بروبرتس وامتحان انهارده كان فى تعريفات وهذه خدمة مقدمة لصديقىmido203 وردا على دكتور هدير جهاد
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