Definitions
The study of matter and energy and their relationships
Physics
Symbol and base unit for Length
Meter (m)
Nano
(n) (10^-9)
y=mx+b
Used to check if answers are in correct units
Dimensional Analysis
Base unit and symbol for Mass
Kilogram (kg)
Micro
(Moo) 10^-6
A 0 is only significant if
It is between 2 nonzeros, it is a trailing 0 and there is a decimal
All valid digits in a measurement
Sig Figs
Base unit and symbol for time
seconds (s)
Milli
(m) 10^-3
Write in scientific notation
The degree of exactness in a measurement
Precision
Base unit and symbol for temperature
Kelvin (K)
Centi
(c) 10^-2
+/- sig figs
#'s after the decimal
How close a measurement is to the "real value"
Accuracy
The 7 SI base units can be combined to form many different _____________ units.
Deci
(d) 10^-1
mult/divide sig figs
smallest # of #'s