Analysis cont cannot give numerical factors this is

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Unformatted text preview: made up of quarks –  Orbited by •  Electrons, nega<vely charges, “light” –  Fundamental par<cle, no structure Structure of Ma:er CLICKER QUESTION Dimensional Analysis •  Technique to check the correctness of an equa<on •  Dimensions (length, mass, <me, combina<ons) can be treated as algebraic quan<<es –  Add, subtract, mul<ply, divide •  Both sides of equa<on must have the same dimensions Examples: v=v+at 0 F=ma Dimensional Analysis, cont. •  Cannot give numerical factors: this is its limita<on •  Allows a check for calcula<ons which can show up in the units Examples in Class Uncertainty in Measurements •  There is uncertainty in every measurement, this uncertainty carries over through the calcula<ons –  Need a technique to account for this uncertainty •  We will use rules for significant figures to approximate the uncertainty in results of calcula<ons Significant Figures •  A significant figure is a reliably known digit •  All non- zero digits are significant •  Zeros are not significant when they only locate the decimal point –  Using scien<fic no<on to indicate...
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This document was uploaded on 01/14/2014.

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