Units Flashcards
1
Q
SI prefixes
A
-Giga, Symbol: G , Multiplier: x10^9
-Mega, Symbol: M, Multiplier: x10^6
-Kilo, Symbol: k, Multiplier: x10^3
-Base unit
-Milli, Symbol: m, Multiplier: x10^-3
-Micro, Symbol: µ, Multiplier: x10^-6
-Nano, Symbol: n, Multiplier: x10^-9
2
Q
What are the units for energy? [2]
A
-Joules (J)
-electron volts (eV)
eV to Joules = (value for eV) x 1.6 x 10^-19
3
Q
What are the units for wavelength?
A
λ= metres
4
Q
What are the units for frequency?
A
f = Hertz (Hz)
5
Q
What are the units for speed?
A
c = Speed (m/s OR ms-1)
6
Q
What are the units for distance?
A
d = metres
7
Q
What are the units for time?
A
t = seconds (s)
8
Q
What are the units for phase difference? [2]
A
-π = 180∘
- ∘ = degrees
9
Q
What are the units for path difference?
A
metres
