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بسم الله الرحمن الرحيم

بسم الله الرحمن الرحيم. Prof. Mohammed S. Alayed Office: 2A60 Email: malayed@ksu.edu.sa. Units and Dimensions. Some Prefixes for Powers Used with “Metric” (SI and cgs) Units. DIMENSIONAL ANALYSIS In physics, the word dimension denotes the physical nature of a quantity.

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بسم الله الرحمن الرحيم

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  1. بسم الله الرحمن الرحيم Prof. Mohammed S. Alayed Office: 2A60 Email: malayed@ksu.edu.sa

  2. Units and Dimensions

  3. Some Prefixes for Powers Used with “Metric” (SI and cgs) Units

  4. DIMENSIONAL ANALYSIS • In physics, the word dimension denotes the physical nature of a quantity. • The symbols that we use in this section to specify the dimensions of length L , mass M, and time T. • In 1960, an international committee agreed on a standard system of units for the fundamental quantities of science, called SI (Système International). Its units of length (meter), mass (kilogram) and time are the meter (second):(mks units). • For example, The distance between two points, can be measured in feet and meters.

  5. Standard system of units for the fundamental quantities of science, called SI (Système International). Its units of length (meter), mass (kilogram) and time are the meter (second):(mks units).

  6. Volume of • (Cube of side L) = L3 • (Sphere of Radius r) = • (Cylinder of Radius L and Height H) =

  7. الكثافة • في الكميات الصغيرة من المائع يمكن كتابة الصيغة الرياضية في الصورة التالية: • وحدة قياس الكثافة

  8. الضغط هو القوة المؤثرة على وحدة المساحة من المائع، وهو كمية قياسية القوة الضغط المساحة

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