PHYS 211 Lecture 2 Outline of Last Lecture I. What is Physics?II. Units of MeasureIII. Unit ConversionsOutline of Current Lecture I. Significant Figures Current LectureI. Significant Figures*The significant figures in any measurement are the digits that are known with certainty, plus one digit that is uncertain.Addition and subtraction: round the answer to the LEAST number of places in the decimal portion of any number in the problemExample: 0.33m 25.0 m No decimal places, answer has to have this many sig figs+ 7.2 m 32.53m Final answer is rounded to 33 mDivision and multiplication: the answer is rounded to reflect the least precise measurement. Example: 2.5 Least number of sig figs (least precise) x 3.91 9.775 so the answer is rounded to 9.8These notes represent a detailed interpretation of the professor’s lecture. GradeBuddy is best used as a supplement to your own notes, not as a
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