1. Plotting Graphs

2. Tables Add columns to vary data Must include units P/pa0.53581011 V/m 3 10.70.10.0650.050.04

3. Tables Add columns to vary data Must include units P/pa0.53581011 V/m 3 10.170.10.0650.050.044 1/V /m -3 15.881015.42023

4. P/pa0.53581011 1/V /m -3 15.881015.42023 P/pa 1/V /m-3 1 2 3

5. P/pa0.53581011 1/V /m -3 15.881015.42023 P/pa 1/V /m-3 2 4 6 8 10 12 14 5101520

6. P/pa 1/V /m-3 2 4 6 8 10 12 14 5101520 To find the slope we take 2 points on the line not from the table X X (8,4) (22,11)

7. P/pa 1/V /m-3 2 4 6 8 10 12 14 5101520 X X (8,4) (22,11)

8. Your turn – plot P against P/kPa120180220280 v /cm 3 9.06.05.04.0

9. Exam advice Why keep mass constant?- So there will be only 2 variables. Why use slope of graph? So to give a weighted mean …use origin…line of best fit…ignore outliers

10. Unit Modifiers for Reference Smaller Deci = 10 -1 Centi = 10 -2 Milli = 10 -3 m Micro = 10 -6  Nano = 10 -9 n Pico = 10- 12 p Fento = 10 -15 Larger o Kilo = 10 3 k o Mega = 10 6 o Giga = 10 9 o Tera = 10 15 Examples: 5ma =.005a 10k  = 10000 