chapter 1 Flashcards
1
Q
meaning physical quantities?
A
quantity that can be observed and measured
2
Q
SI unit also know as?
A
metric system
3
Q
2 category of physical quantities
A
base quantity ( fundamental quantity )
derived quantity
4
Q
What is base quantity?
A
physical quantity that cannot be defined in terms of other physical quantity
5
Q
Si unit length
A
meter , m
6
Q
si unit mass
A
kg
7
Q
si unit time
A
sec, s
8
Q
si unit electric current,I
A
ampere A
9
Q
si unit thermodynamic temperature T
A
Kelvin, K
10
Q
si unit amount of substance,n
A
mole(mol)
11
Q
si unit luminous intensity Iv
A
candela ( cd)
12
Q
Meaning derived quantities?
A
quantity that can derived from base quantities
13
Q
density formula
A
mass/vol
kgm-3
14
Q
velocity unit
A
length/time
ms-1
15
Q
momentum unit
A
mass x velocity
kgms-1
