PHYS 2010 Chapter Notes - Chapter 1.4-2.4: Unified Atomic Mass Unit, Dimensional Analysis, Luminous Intensity
Document Summary
8. 8 0. 1 cm, . 01 cm is the estimated uncertainty. Percent uncertainty - the ratio of the uncertainty to the measured value, multiplied by. Uncertainty in a numerical value is assumed to be one or a few units in the last digit specified. Significant figures - the number of reliably known digits in a number. Scientific notation - numbers in powers of ten. Atoms and molecules - unified atomic mass unit ( u or amu) Base quantity - corresponding units defined in terms of a standard. Derived quantity - corresponding units defined in terms of the seven base quantities. Conversion factor - how many units of a measurement are in one unit of another measurement. Dimensions - type of base units or base quantities that made up a quantity. Dimensional analysis - when the dimensions can be used as a help in working out relationships. Coordinate axes - directions to represent a frame of reference.
