What is meant by physical quantities? What are base and derived physical quantities? describe your answer with examples.
Answers
In physics, a physical quantity is any physical property that can be quantified, that is, be measured using numbers. Examples of physical quantities are mass, amount of substance, length, time, temperature, electric current, light intensity, force, velocity, density, and many others.
Answer:
Physical quantity is the property of an object that can be quantified. For instance, the physical quantities are the length of a rod or the mass of a body. Measurement is the act of comparing a physical quantity with its unit. ... This value can be expressed as the product of numerical value and corresponding unit.
Derived quantities are quantities that are calculated from two or more measurements. Derived quantities cannot be measured directly. ... Many derived quantities are calculated in physical science. Three examples are area, volume, and density.
For example, the physical quantity mass can be quantified as n kg, where n is the numerical value and kg is the unit.
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