Please sit together in pairs: Michael A. and Lisa Barney and Joseph B. Thomas and Hao-Chien

1. Arielle and Rebecca • Mikhail and Katherine • Yujia and Yiran • Valerie and Joseph Seb. • Kevin and Quanbiao • Allison and Charles • Matt M. and Lu • Morgan and Ashkan • Laura and Naichen • Lauren and Dale • Michael O. and Disha • Hannah and Efrain • James and Da • Nicholas and Heran • Ben and Joseph Ser. • Please sit together in pairs: • Michael A. and Lisa • Barney and Joseph B. • Thomas and Hao-Chien • Glenn and Stephen • Ann and Qihan • John and Tyson • Meaghan and Nicole • Korey and Edward • William and Zhenmin • Michael W. and Taehoon • Zach and Shenheng • Casey and Matt R. • Audrey and Shiyue • Lisette and Evan Phys 150 Lecture 1

2. Phys 150 – Physics of Societal Issues • Professor Scott Willenbrock • Research interests in particle physics and finance • Teaching Assistant: Mae Hwee Teo • Intended for non-science majors interested in science in today’s world • No background required or assumed • Satisfies the Physical Sciences requirement of the Natural Sciences and Technology requirement of the General Education requirements • Satisfies the Quantitative Reasoning II requirement • Textbook • Physics and Technology for Future Presidents by Richard Muller • DO NOT CONFUSE WITH Physics for Future Presidents by the same author – buy that one for your parents! Phys 150 Lecture 1

3. Other required materials • i>clicker • Register your i>clicker on the Phys 150 web page • Student ID = Net ID = your UIUC email address (Net ID @illinois.edu) • Set i>clicker frequency to BB • A basic calculator • Choose one with scientific notation (EE or EXP button) Phys 150 Lecture 1

4. Why take this course? • Modern science is essential to understanding and solving major societal issues • We will eventually run out of fossil fuels (oil, coal, natural gas). What alternative sources of energy make sense? • Fossil fuels emit a lot of carbon dioxide. How will this affect the Earth’s climate? • What are the benefits and risks of nuclear energy? What happened at Fukushima? Chernobyl? Three Mile Island? • What are the different kinds of nuclear weapons? Why are they hard to make? • What are the benefits and risks of medical imaging? How dangerous are different kinds of radiation? • What is an earthquake? A tsunami? Where does the Earth’s magnetic field come from? • How do spy satellites work? How about GPS satellites? Weather satellites? Phys 150 Lecture 1

5. How to read the textbook • First reading of Chapter BEFORE coming to lecture • Read like a novel, don’t get hung up on numbers or calculations • Further reading of Chapter for studying material more carefully • Learn relevant numbers and formulas • Things that you can ignore: • Footnotes (although they are often interesting) • Sections labeled “Optional” Phys 150 Lecture 1

6. What do I really need to know? • Everything that the author tells you that you need to know • Unnecessary to memorize tables of numbers • Everything that is covered in lecture (unless you are told otherwise) • Lectures contain material supplemental to the textbook • One difference from the textbook: I will teach you how to work with and understand numbers Phys 150 Lecture 1

7. Weekly assignments • Read the Chapter BEFORE coming to Tuesday lecture. • Quiz (almost) every Tuesday at the beginning of class • Multiple choice questions based on the reading for the week • Homework due the following Monday at midnight • Multiple choice questions and written-answer questions Phys 150 Lecture 1

8. Exams • Exam 1 – Thursday, October 4, in class • Chapters 1-5 • Exam 2 – Thursday, November 29, in class • Chapters 6-10 • Final Exam – Friday, December 14, 7:00-10:00 PM • Chapters 1-11 • Exams will have both multiple-choice and written-answer questions. Phys 150 Lecture 1

9. Grading • 60 pt (max): i>clicker - 3 points per lecture • Starting next Tuesday • 100 points: Quizzes - 10 points each • 11 quizzes, drop lowest score • Starting next Tuesday (Quiz on Chapter 2) • 240 points: Homework – 20 points each • Homework 1 is due Monday at midnight • 300 points: Exams 1 and 2 – 150 points each • 300 points: Final Exam • 1000 points total • A (>900), B (>800), C(>700), D(>600) Phys 150 Lecture 1

10. Chapter 1 – Energy and Power • Chemical energy Canister Phys 150 Lecture 1

11. Chapter 1 – Energy and Power • Chemical energy Canister 100 Tons TNT Phys 150 Lecture 1

12. i>clicker question Which of these has the LEAST amount of energy per gram? • TNT • Chocolate Chip Cookies • Ethanol • Hydrogen Phys 150 Lecture 1

13. Energy per gram Compared to TNT • TNT 1 • Chocolate chip cookies 8 • Ethanol 10 • Hydrogen 40 • - TNT does not require Oxygen to explode Balloon Phys 150 Lecture 1

14. Energy per gram Compared to TNT • TNT 1 • Chocolate chip cookies 8 • Ethanol 10 • Hydrogen 40 • - TNT does not require Oxygen to explode Balloon Fukushima 2011 Hindenburg 1937 Phys 150 Lecture 1

15. Energy per gram Compared to TNT • Car battery 0.05 • Computer battery 0.15 • Chocolate chip cookies 8 • Coal 10 • Ethanol 10 • Gasoline 15 • Natural gas (methane) 20 • Hydrogen 40 • Uranium-235 30 million Phys 150 Lecture 1

16. Explosions Cannon • Rapidly expanding hot gas Phys 150 Lecture 1

17. Explosions Cannon • Rapidly expanding hot gas Comet Shoemaker-Levy 9 1994 Phys 150 Lecture 1

18. Explosions • Kinetic energy = energy of motion = ½ mv2 Extinction of dinosaurs 65 million years ago Phys 150 Lecture 1