Topic 1 - Physical quantities and units Flashcards
base, derived quantities , Homogenity
1
Q
Length
l
A
m
metre
2
Q
Time
t
A
s
seconds
3
Q
Current
I (big i)
A
A
amperes
4
Q
Thermodynamic Temperature
T or theta
A
K
kelvin (degrees)
5
Q
Luminous Intensity
L
A
cd
candela
6
Q
Mass
m
A
Kg
Kilogram
7
Q
Amount of a substance
n
A
mol
mole (6.02 x 10^23)
8
Q
Fundamental quantities?
seven
A
Mass
Luminous Intensity
Length
Time
Current
Amount of a Substance
Thermodynamic Temperature
9
Q
Area
A
m^2
10
Q
volume
A
m^3
11
Q
velocity/speed
A
ms^-1
12
Q
Acceleration
a
A
ms^-2
13
Q
Density
rho (p thing)
A
Kgm^-3
14
Q
Frequency
Hertz
A
s^-1
15
Q
Pressure
Pascal
A
Kgm^-3 s-2
16
Q
Force
Newton
A
Kgms^-2
17
Q
Momentum
p
A
m^2 s^-1
18
Q
Energy
Joule
A
Kgm^2 s^-2
19
Q
Power
Watt
A
Kgm^2 s^-3
20
Q
Charge
Q, Coulomb
A
As
21
Q
Voltage
V, volts
A
Kgm^2 s^-2 A^-1
22
Q
Resistance
Ohm, ohm sign
A
Kgm^-2 s^-4 A^-2
23
Q
Specific Heat Capacity
c
A
m^2 s^-2 K^-1
J/kg⋅K
24
Q
What is homogenity?
A
when an equation has the same units on both sides
25
# State
The prefixes
| in ascending order
pico (p), nano (n), micro (μ), milli (m), centi (c), deci (d), kilo (k), mega (M),
giga (G), tera (T
26
What is an Error?
A problem tha causes a reading to be different from the actual value
27
What is an Uncertainty?
The range of values around which the true value can be found
28
What is
