Physical Quanties Flashcards
What is a physical quantity?
One that can be measured and is comprised of a magnitude (or size) and a unit
List the 7 base quantities and the associated units in the SI System
Base Quantity: Temperature- T
Base Unit: Kelvin- K
Base Quantity: Electric current- I
Base Unit: Ampere- A
Base Quantity: Length- L
Base Unit: Meter- m
Base Unit: Mass- m
Base Quantity: Kilogram- kg
Base Quantity: Time- t
Base Unit: Second- s
Base Quantity: Luminous intensity- Iv
Base Unit: Candela- cd
Base Quantity: Amt of substance- n
Base Unit: Mole- mol
What are Derived Quantities and how are they obtained?
In scientific calculators, it is often necessary to combine 2 or more of the fundamental quantities. The resulting quantity is called a derived quantity and its unit is a derived unit.
Derived Units are obtained from the multiplication &/or division of fundamental or base quantity
(All other quantities and their units are formed from the seven fundamental quantities & their units)
