1.1 Physical Quantities Flashcards
1
Q
base unit
A
unit from which all other units can be derived
2
Q
derived unit
A
unit that results from mathematical combination of SI base units
3
Q
6 SI base units
A
kilogram
metre
mole
kelvin
ampere
second
4
Q
what do all physical quantities consist of?
A
numerical magnitude and a unit
5
Q
homogenous equation
A
same units on both sides of = sign
equation = valid
6
Q
inhomogeneous equation
A
equation = invalid
different units on both sides of = sign
7
Q
significant figures
A
indicates how accurate we think answer is
8
Q
10 prefixes
A
tera
giga
mega
kilo
centi
milli
micro
nano
pico
femto
9
Q
multiplier for tera
A
12
10
Q
multiplier for giga
A
9
11
Q
multiplier for mega
A
6
12
Q
multiplier for kilo
A
3
13
Q
multiplier for centi
A
-2
14
Q
multiplier for milli
A
-3
15
Q
multiplier for micro
A
-6
