PHYS 211 Lecture 1 Outline of Current Lecture I. What is Physics?II. Units of MeasureIII. Unit ConversionsCurrent LectureI. What is physics?Physics attempts to describe nature in an objective way through nature. Measurements are expressed in units, officially accepted units are called standard units.II. Units of MeasureMajor Systems of Units:1. Metric2. British (not used by the British anymore)SI Metric UnitsMass: gramLength: meterVolume: literTime: secondPearson Education 2010III. Unit ConversionsExample 1These notes represent a detailed interpretation of the professor’s lecture. GradeBuddy is best used as a supplement to your own notes, not as a substitute.Example 2The Queen Elizabeth II travels 15m on a gallon. The distance from Liverpool to New York is 3314 miles. A barrel of oil holds 42 gallons and gas costs $75/barrel. How many gallons with it use? How much will the trip cost?3314 miles(1609m/1mile)(1gallon/15m)=355,480 gallons 355,480 gallons (1 barrel/42 gallons)($75/barrel) =
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