You must be wondering, what is a physical quantity?
Well, "A physical quantity (or "physical magnitude") is a physical property of a phenomenon body, or substance, that can be quantified by measurement".
"Most physical quantities include a unit, but not all - some are dimensionless. Neither the name of a physical quantity, nor the symbol used to denote it, implies a particular choice of unit, though SI units are usually preferred and assumed today due to their ease of use and all-round applicability. For example, a quantity of mass might be represented by the symbol m, and could be expressed in the units kilograms (kg), pounds (lb), or daltons (Da)."
These are the base quantities:
What are SI units?
"The International System of Units (abbreviated SI from French: Le Système international d'unités) is the modern form of the metric system and is the world's most widely used system of measurement, used in both everyday commerce and science. It comprises a coherent system of units of measurement built around seven base units, 22 named and an indeterminate number of unnamed coherent derived units, and a set of prefixes that act as decimal-based multipliers."
Here are some prefixes:
So, how do we convert units? Watch the video below to find out more!
Thanks for viewing!
Pictures and videos from google and youtube respectively
Some information from wikipedia
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