1.1- Physical Quantaties Flashcards
1
Q
State the 6 SI base units
A
Mass-Kilogram
Time- second
Length- meter
Current- ampere
Temperature- kelvin
Amount of substance- moles
2
Q
Prefixes and multiplication factor ( in relation to meters )
A
Femto- 10^-15
Pico- 10^-12
Nano-10^-9
Micro-10^-6
Milli-10^-3
Centi- 10^-2
Kilo-10^3
Mega-10^6
Giga-10^9
Tera-10^12
3
Q
Define the term - base units -
A
Units from which all other units are derived
4
Q
What is a SI derived unit
A
Units which consist of two or more base units
Some have names, some don’t
5
Q
What is a Homogeneous equation?
A
Equations where the base units are the same on each side
Inhomogeneous equations are nonsensical
