1.1 & 1.2 Physical Quantities and Units

Question 1

1.1.1 All physical quantities consist of a…

Answer 1

consist of a numerical magnitude and a unit.

Question 2

1.2.1 What are the seven SI base quantities and their units?

Answer 2

Mass in kg
Length in m
Time in s
Current in A
Temperature in K
Amount of substance in mol
Luminous intensity in cd (candela)

Question 3

1.2.4 What are the prefixes pico, nano, micro, milli, centi, and what are their symbols?

Answer 3

Pico (p) 10^-12
Nano (n) 10^-9
Micro (μ) 10^-6
Milli (m) 10^-3
Centi (c) 10^-2

Question 4

1.2.4 What are the prefixes deci, kilo, mega, giga, and tera, and what are their symbols?

Answer 4

Deci (d) 10
Kilo (k) 10^3
Mega (M) 10^6
Giga (G) 10 ^9
Tera (T) 10^12