2.1 Physical Quantities, Units and Measurements Flashcards
1
Q
Force
A
kgms-2
2
Q
Work done
A
kgm2s-2
3
Q
Power (derived units)
A
Kgm2s-3
4
Q
Voltage (derived units)
A
Kgm2s-3A-1
5
Q
Resistance (derived units)
A
Kgm2s-3A-2
6
Q
Pressure (derived units)
A
Kgm-1s-2
7
Q
Resistivity
A
Kgm3s-3A-2
8
Q
Tera standard form
A
12
9
Q
Giga standard form
A
9
10
Q
Mega standard form
A
6
11
Q
Kilo standard form
A
3
12
Q
Centi standard form
A
-2
13
Q
Milli standard form
A
-3
14
Q
Micro standard form
A
-6
15
Q
Nano standard form
A
-9
16
Q
Pico standard form
A
-12
17
Q
Define accuracy.
A
How close the mean value is to the true value.
18
Q
Define precision.
A
How close together the repeat values are.
19
Q
What is resolution?
A
The smallest change it can read.
20
Q
What is homogeneous?
A
Same for each quantity in equation
21
Q
Estimate of power used by one person in a day
A
1 kW
22
Q
Estimate power of toaster
A
1200W
23
Q
Estimate power of microwave
A
1500W
24
Q
Estimate power of air conditioner
A
5000 W
25
Estimate power of oven
3000W
