What is a physical quantity?
Q: What is a physical quantity?
A: A physical quantity is any physical property that can be quantified and measured using numbers.
Q: Can physical quantities be measured from living organisms?
A: No, physical quantities are measured only from natural non-living objects (inanimate objects).
Q: What are some examples of physical quantities?
A: Examples of physical quantities are mass, amount of substance, length, time, temperature, electric current, light intensity, force, velocity, density, and many others.
Q: Why are physical quantities essential to the foundation of physics?
A: The foundation of physics rests upon physical quantities in terms of which the laws of physics are expressed.
Q: How should physical quantities be measured?
A: Physical quantities should be measured accurately because they are essential to the foundation of physics.
Q: What are base quantities?
A: Base quantities are physical quantities that cannot be derived from other physical quantities. They are independent quantities and must be measured directly.
Q: What are derived quantities?
A: Derived quantities are physical quantities that are derived from other physical quantities. Examples of derived quantities are force, velocity, acceleration, etc.
