Working as a Physicist Flashcards
1
Q
pico
A
x10^-12
2
Q
nano
A
x10^-9
3
Q
micro
A
x10^-6
4
Q
milli
A
x10^-3
5
Q
kilo
A
x10^3
6
Q
mega
A
x10^6
7
Q
giga
A
x10^9
8
Q
terra
A
x10^12
9
Q
Name the seven SI units
A
Metre (m) - length
Kilogram (kg) - mass
Second (s) - time
Ampere (A) - current
Kelvin (K) - temperature
Mole (mol) - amount of substance
Candela (cd) - luminous intensity
10
Q
What are the two rules for combining uncertainties?
A
- multiplying/dividing two measurements: percentage uncertainties are added
- measurements that are subject to powers: multiply by the power
11
Q
How do you calculate percentage uncertainties?
A
(resolution/reading)x100
12
Q
What is a scalar quantity?
A
A quantity with magnitude only
13
Q
Scalar quantity examples
A
Speed
Distance
Energy
Time
Power
Charge
Current
Voltage
14
Q
What is a vector quantity?
A
A quantity with both a magnitude and direction
15
Q
Examples of vector quantities
A
Velocity
Displacement
Force
Acceleration
