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General Physics A Spring 2007

General Physics A Spring 2007. Prof. Harrison Prosper Tutorials: Prof. Gershtein Prof. Roberts Prof. Tabor Prof. Zhou. Welcome to PHY 2048C!. Lectures Learn and apply principles Tutorials Practice problem solving Labs Learn basic experimental techniques.

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General Physics A Spring 2007

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  1. General Physics ASpring 2007 Prof. Harrison Prosper Tutorials: Prof. Gershtein Prof. Roberts Prof. Tabor Prof. Zhou

  2. Welcome to PHY 2048C! • Lectures • Learn and apply principles • Tutorials • Practice problem solving • Labs • Learn basic experimental techniques

  3. Welcome to PHY 2048C! • Textbook Physics for Scientists and Engineers, Volume 1, Paul A. Tipler Gene Mosca

  4. Welcome to PHY 2048C! • Personal Response System You will use your PRS “clicker” to answer questions in class This is how you can earn extra credit

  5. Welcome to PHY 2048C! • Grades • Mini-Exams 35% • Mid-Term 15% • Finals 20% • Labs 20% • Homework/Tutorials 10%

  6. What is Physics? • The study of • Matter • Energy • Time • Space

  7. Mankind’s Greatest Discovery The Universe is understandable Why? Because it works according to definite rules Moreover, the rules are mathematical

  8. Physics in Action:

  9. Chapter One: Systems of Measurement • S.I. Units • Length meters (m) • Time seconds (s) • Mass kilograms (kg)

  10. Chapter OnePowers of 10 • 10-9 nano (n) • 10-6 micro (m) • 10-3 milli (m) • 103 kilo (k) • 106 mega (M) • 109 giga (G)

  11. Chapter One Units are Important! http://www.cnn.com/TECH/space/9909/30/mars.metric.02

  12. Chaper One:Dimensional Analysis • Question 62, page 16 • Period T of pendulum depends on length L and acceleration due to gravity g • Let’s derive an approximate formula for the period

  13. Chapter One: Significant Figures • Every measurement has a degree of uncertainty • Therefore it makes sense to round off numbers in some reasonable way

  14. Chapter One: Significant Figures • Example: • A square table has a measured area of 3.5 m2 • It would be absurd to write the length of each side as 1.870828693 m! • 1.87m is more sensible.

  15. Chapter One: Order of Magnitude • This is a number rounded off to the nearest power of 10 • Examples: • Federal Budget ~ $3 trillion • Human lifespan ~ 100 years

  16. Chapter One: Order of Magnitude • Let’s do an order of magnitude calculation of • the mass of air supported by your body

  17. Chapter One: End • Try this “Fermi Question” • How many drops of rain fall in a typical rain storm in Tallahassee?

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