Physical quantities Flashcards
1
Q
Define physical quantities
A
Physical quantities are quantities that can be measured, consisting of a numerical value and magnitude
2
Q
Define base quantities
A
Base quantities are a set of independent physical quantities
3
Q
Name the prefixes from small to large
A
Nano (n)
Micro (u)
Milli (m)
Centi (c)
Deci (d)
Kilo (k)
Mega (M)
Giga (G)
Tera (T)
3
Q
What are the base quantities
A
- Length (m)
- Mass (kg)
- Time (s)
- Temperature (K)
- Amount of substance (mol)
- Electric current (A)
4
Q
What is the diameter of an atom
A
1.0x10^-10
4
Q
What is the radius of a hydrogen nucleus
A
1.0x10^-15
5
Q
What is the width of human hair
A
1.0x10^-4
5
Q
Give an example of an oscillation
A
- Regular, repeated, back and forth motion of a simple pendulum is an example of an oscillation
6
Q
What is the diameter of earth
A
1.2x10^7
