1 / 13

Physics Review Topics

Physics Review Topics. Things you should know from Chemistry…. SI Units (Metric System). Base Units: m,kg,L,mol,s Combination of Base Units=Derived Units(g/L) Table 2-1 pg. 17 lists metric prefixes Remember Metric System is based on Powers of Ten! Converting….

ellery
Download Presentation

Physics Review Topics

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Physics Review Topics Things you should know from Chemistry…

  2. SI Units (Metric System) • Base Units: m,kg,L,mol,s • Combination of Base Units=Derived Units(g/L) • Table 2-1 pg. 17 lists metric prefixes • Remember Metric System is based on Powers of Ten! • Converting….

  3. Significant Digits/Figures • Rules: • Nonzero digits are always significant • Final zeros after a decimal are significant • Embedded zeros are significant • Placeholder zeros are NOT significant • Do not use constants or numbers that are not measurements (ex.1day) to decide on significant digits in a problem!

  4. How many “sig figs” in an answer? Adding & Subtracting Multiplying & Dividing Round to the same number of significant digits as the least precise value (one with the least digits) • Round to the PLACE of the least precise value (one with the least digits after decimal)

  5. Scientific Notation m x 10n • Where 1 < m < 10 and n is an integer • If you move the decimal to the left, n is positive and if you move the decimal to the right, n is negative • When converting to scientific notation, you take away non-significant zeros!

  6. Arithmetic with Scientific Notation • Adding and Subtracting: • Exponents must “match”…if they do not, move decimal until they do! • Multiplying and Dividing: • Exponents do not have to “match” • Multiplying: add exponents • Dividing: subtract exponents

  7. Graphing2.3 This is just a quick refresher…to be completely prepared, you should read this entire section and review the graphics

  8. Types of Graphs:

  9. Line Graph Reminders • Independent variable • X axis • Thing you are changing • Time is a common ind.variable • Dependent variable • Y axis • Thing that changes due to independent changing • Making Graph • Labels (title and axis) • Spacing of numbers • Types of Line Graphs • Linear, Quadratic, and Inverse

  10. Linear Relationships • Graph is a straight line • Relationship between variables can be shown in this equation: y=mx+b • m=slope (rise over run) and b=y-intercept • Slope can be positive or negative:

  11. Quadratic Relationship • Graph is a parabola, the parabolic relationship exists when one variable depends on the square of another. • y=kx2 • k is a constant that shows how fast y changes with x2

  12. Inverse Relationships • Graph is a hyperbola, a hyperbola results when one variable depends on the inverse of the other. • y=(k)(1/x) or xy=k • Where k is again a constant

  13. Interpolating/Extrapolating • Interpolating: Reading within a set of data points • Extrapolating: Extending past given data points to make a reading

More Related