what is a scalar and vector and what is magnitude
Answers
Answer:
In a naive definition, a scalar quantity might be viewed as some physical quantity which can only have a numerical value in some appropriate units related to it.
However, in case of some physical quantities, the specification of their direction along with some numerical value attached to it becomes crucial.
The examples would be straight forward that you might already be knowing.
And, well this numerical value that is attached to each and every physical quantity is the magnitude of that physical quantity in a particular problem.
However as you'll learn in higher classes, a scalar and a vector may be defined more formally as quantities which remain invariant over coordinates' linear or rotational transformations.
For example, the distance between any two points in a phase plane will not change due to any transformations what so ever until you have a squeezing transformation applied.
And it's hence that we say distance is a scalar quantity, since it's invariant over transformations.
Hope this helps you !
Answer:
Scalars are quantities that are fully described by a magnitude (or numerical value) alone. Vectors are quantities that are fully described by both a magnitude and a direction...
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