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Classical Physics

Classical Physics. Introduction to Physics Textbook: Physics for Computer Science Students, by N. Garcia, A. Damask, and S. Schwarz, 2nd, 1998. Chapter One. Physical Quantities. Physical Quantities. In physics two fundamental processes are involved:

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Classical Physics

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  1. Classical Physics Introduction to Physics Textbook: Physics for Computer Science Students, by N. Garcia, A. Damask, and S. Schwarz, 2nd, 1998.

  2. Chapter One Physical Quantities

  3. Physical Quantities • In physics two fundamental processes are involved: 1. the description of natural phenomena based on experiments, which control variables; 2. mathematical manipulation or theorizing, which is a predictive process.

  4. Quantities and Units • In classical physics the fundamental parameters in the measurement system are length, mass, and time. • There are two versions of the metric system in use, the cgs (centimeter, gram, second) and the mks (meter, kilogram, second). • Conversion of units • In square or cubic units, all measurements must be in the same units.

  5. Powers of 10

  6. Accuracy of Numbers • Suppose we wish to find the area of a rectangular surface. • See Figure 1-1. • Our measurement of widths is as and The largest area is and the smallest is

  7. We can write the answer as • The accuracy of the product cannot exceed the accuracy of any of the components in the product. • No matter how accurately a given parameter is measured, when is combined arithmetically with another measurement the result is only as accurate as the least-accurate measurement.

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