PHYS 200 Unit 1: The Nature of Science and Physics

Questão	Responda
Theory	-explains patterns in nature -supported by scientific evidence -verified by various groups of researchers
Law	-describes generalized pattern in nature -supported by scientific evidence and repeated experiments
SI (Systeme International) units	international system of units that scientists agreed to use
Units for time	-second -minute (60 sec) -hour (60 min, 3600 sec)
Unit for length	-millimeter -centimeter (10 mm) -meter (100 cm, 1000 mm) -kilometer (1 x 10^6 mm, 1 x 10^5 cm, 1000 m)
Unit for mass	-gram -kilogram (1000 g)
accuracy	degree to which measured value agrees with correct value
precision	degree to which repeated measurements agree with each other
uncertainty	quantitative measure of how much measured values deviate from standard or expected value
%unc	(unc A)/A x 100%
significant figures	express precision of measuring tool used to measure value
method of significant figures	last digit written down in measurement is first digit with some uncertainty
sig fig in calculations	-sig figs in final answer cannot exceed sig figs in least precise measurement

Resumo de Recurso

	Criado por Adriana Vincelli-Joma mais de 3 anos atrás