PHYS 1003 Lecture Notes - Lecture 1: Kilogram, Significant Figures, Dimensional Analysis
12 Oct 2016
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Document Summary
The study of the basic particles of matter and their interactions in order to deduce : Physical models of how the universe works. Engineering is the application of physics to the structure and functioning of materials to advance technology. The si (syst me international) based on the metre, kilogram and second. Length, mass and time are three of the most fundamental quantities in physics. Scientific notation allows us to write very large or very small values in an abbreviated form. 1. 980 10^30 kg 2 10^6 = (1. 980 2) 10^30+6. They both mean two different things in physics. Accuracy: how close is the number to the right answer. Precision: how reproducible is the experimental result (do you always get the same answer) Ideally, we"d want an answer that is both accurate and precise. In physics, there are two parts to every experimental numerical result. The precision of the result (the error)
