ملتقى الفيزيائيين العرب > قسم المناهج الدراسية > فيزياء المرحلة الجامعية. | ||
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#1
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![]() الله يعافيكم احتاج التعاريف والقوانين هذي بالانجليزي
التعاريف الوزن النوعي الحرارة الكامنة للانصهار الاجهاد الانفعال معامل المرونة الحركة التوافقية البسيطة وحدات القياس الوزن النوعي الحرارة الكامنة للانصهار مكافئ جول معامل المرونة المقاومة فرق الجهد التيار الكهربائي درجة الحرارة عجلة الجاذبية الارضية |
#2
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![]() 1- The specific weight (also known as the unit weight) is the weight per unit volume of a material. Its unit is N/m^3 2- Latent heat is the heat released or absorbed by a chemical substance or a thermodynamic system during a change of state that occurs without a change in temperature, meaning a phase transition such as the melting of ice or the boiling of water (here just for melting of ice) The enthalpy of fusion, also known as the heat of fusion or specific melting heat, is the change in enthalpy resulting from the addition or removal of heat from 1 mole of a substance to change its state from a solid to a liquid (melting) or the reverse processes of freezing. It is also called the latent heat of fusion, and the temperature at which it occurs is called the melting point. Its unit is kJ/kg. 3- Stress is defined as force per unit area. It has the same units as pressure, and in fact pressure is one special variety of stress. However, stress is a much more complex quantity than pressure because it varies both with direction and with the surface it acts on. Its unit is N/m^2 4- Strain is defined as the amount of deformation an object experiences compared to its original size and shape. For example, if a block 10 cm on a side is deformed so that it becomes 9 cm long, the strain is (10-9)/10 or 0.1 (sometimes expressed in percent, in this case 10 percent.) Strain is dimensionless. 5- Elasticity of a material is the ratio of stress to strain. Its unit is N/m^2 6- In physics, simple harmonic motion (SHM) is a periodic motion that is neither driven nor damped. An object in simple harmonic motion experiences a net force which obeys Hooke's law; that is, the force is directly proportional to the displacement from the equilibrium position and acts in the opposite direction of the displacement. مكافئ جول جول / سعر Joule / cal المقاومة أوم Ohm فرق الجهد فولت Volt التيار الكهربائي أمبير Ampere درجة الحرارة درجة مئوية أو كلفن Celsius or Kelvin عجلة الجاذبية الارضية متر / مربع الثانية m / s^2 وبالتوفيق ان شاء الله... |
#3
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![]() الله يعطيك العافية (bero) ويرزقك من حيث لاتحتسب
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