Question

describe how long a physical quantity is

Answer 1

Answer:

0according to lumen learning for example 11 to 20 which is a physical quantity can be expressed in units metres or kilometres without standardized units it would be extremely difficult for scientists to express and compare measured values in a meaningful way

Answer 2

Step-by-step explanation:

A physical quantity is a property of a material or system that can be quantified by measurement. A physical quantity can be expressed as the combination of a numerical value and a unit. For example, the physical quantity mass can be quantified as n kg, where n is the numerical value and kg is the unit. A physical quantity possesses at least two characteristics in common, one is numerical magnitude and other is the unit in which it is measured.