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TERMINAL OBJECTIVE - hdbk1010_17
Unit Systems

Classical Physics - Physics theories and other related topics
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Unit Systems FUNDAMENTAL DIMENSIONS Rev. 0 Page 1 CP-01 FUNDAMENTAL DIMENSIONS Length, mass, and time are the three fundamental dimensions on which the measurement of all physical quantities is dependent. EO 1.1 DEFINE  the  three  fundamental  dimensions:  length, mass, and time. EO 1.2 LIST standard units of the fundamental dimensions for each of the following systems: a. International System of Units (SI) b. English System EO 1.3 DIFFERENTIATE between fundamental and derived measurements. Fundamental Dimensions Physics is a science based upon exact measurement of physical quantities that are dependent upon three fundamental dimensions.  The three fundamental or primary dimensions are mass, length, and time.   These three fundamental units must be understood in order to lay the foundation for the many concepts and principles presented in this material. Mass Mass is the amount of material present in an object.  This measurement describes "how much" material makes up an object.  Often, mass and weight are confused as being the same because the units used to describe them are similar.  Weight (a derived unit, not a fundamental unit) is a measurement that describes the force of gravity on the "mass" of an object. Length Length is the distance between two points. The concept of length is needed to locate the position of a point in space and thereby describe the size of a physical object or system. When measuring a length of pipe, the ends of the pipe are the two points and the distance between the two points is the length.   A typical unit used to describe length is the "foot."







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