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Physics for the Life Sciences I

This course on Physics for the Life Sciences I offers essential insights into the application of physics laws governing interactions in various contexts. Utilizing the "College Physics, 8th Edition" textbook by Serway and Vuille, and supported by an online platform, WebAssign, the course emphasizes understanding fundamental concepts through practical applications and problem-solving techniques. Students will engage with significant figures, unit conversions, and various coordinate systems, fostering a strong foundation in physics relevant to life sciences.

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Physics for the Life Sciences I

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  1. Physics for the Life Sciences I Fall 2010 Adam T. Whitten PEngl 101

  2. Resources • Text – College Physics 8th Ed. w/WebAssign by Serway & Vuille • Course Manual – contains detailed information • My website – same info as manual plus additions (e.g., test solutions) • WebAssign website • Self register using class code and access code • Class codes: Section 03A (11:20) csbsju 1747 6239 Section 04A (1:00) csbsju 5704 3356 • Lab Manual: purchase 2 lab notebooks

  3. What is Physics? • Study of laws governing interactions of ______________ • Understanding stated in terms of evolving ______________ • Data either supports or disproves a theory – ____________________

  4. Physics 105 Physics 106 What We’ll Study

  5. MKS or SI units Units – Système International (SI) Base and derived units listed in Appendix D, p. A.21 Measure: Prefixes:

  6. Dimensional Analysis • Using _____ to check for errors in your solution • Using units to help with ___________ manipulation Example:

  7. Significant Figures (Digits) • Definition: a reliably known ________ • Mathematical results only have as many significant digits as the operand with the _________ significant digits • Leading zeroes _________ count • Zeroes trailing fractional part after decimal point _________ count • _________ zeroes always count

  8. Significant Digits (Examples) How many sig figs are there for each number? A = 600 J ___________ B = 660 cm ___________ C = 60.1 mm ___________ D = 0.3 s ___________ E = 0.03 s ___________ F = 0.00300 s ___________

  9. Sig Figs and Addition/Subtraction Sig figs of result determined by operand with _______________________________. 1.25 + 6.2832 + 31.043 = _______ → _______ 0.75 + 5.3728 − 12.269 = _______ → _______ 5200 + 80 + 1.002 = ________ → ______ Watch out for units! 4.5 m − 45 cm + 9 mm = ______________________ = _______ → _______

  10. Sig Figs and Multiplication/Division Result has same number of sig figs as operand with the _____________ of sig figs. (650 J)×(0.00300 s) = _______________ (60.1 mm)/(0.00300 s) = ___________________ → ___________________ (660 cm)/(0.03 s) = ____________________ → ____________________ (350 cm)/(0.0013 s) = ____________________ → ___________________ ______________ helps keep track of sig figs!

  11. Unit Conversions • Always (95% of the time) convert to ___ units • Prefixes listed in Table 1.4, p. 3 • Conversion factors (inside front cover) • Use fractional forms to ________ units • Watch out for units with ___________

  12. Orders of Magnitude • Represented as powers of ten • Examples:

  13. Coordinate Systems • Origin, O – fixed ____________ point • Set of specified axes w/ ______________ • Instructions for labeling points relative to __ Cartesian Coordinates Polar Coordinates Fig. 1.4, p. 13 Fig. 1.5, p. 14

  14. Trigonometry – Right Triangles • Relates Cartesian and Polar Coordinates • Given any two values x, y, r, θ, the other 2 can be found Fig. 1.6, p. 14

  15. Problem Solving Procedure (Outlined in Course Manual and p. 16 of text book) • Read the problem • Draw diagram • Label all physical quantities in diagram • Identify the physical principle(s) or law(s) • Equations relating physical quantities are written down • Solve the set of equations algebraically • Substitute in the known numerical values • Check your answer

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