Question

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What is scalar quantity?​

Answer 1

QuestioN :

What is scalar quantity?​

ANswer :

• a scalar or scalar quantity is a quantity that can be described by a single element of a number field, such as a real number, often accompanied by units of measurement, as in "10 cm".

• This is in contrast to vectors, tensors, etc. which are described by several numbers that characterize their magnitude, direction, and so on.

More ExplanatioN :

• The concept of a scalar in physics is essentially the same as a scalar in mathematics. Formally, a scalar is unchanged by coordinate system transformations.
• In classical theories, like Newtonian mechanics, this means that rotations or reflections preserve scalars, while in relativistic theories, Lorentz transformations or space-time translations preserve scalars.

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Answer 2

Answer:

In physics, a scalar or scalar quantity is a quantity that can be described by a single element of a number field, such as a real number, often accompanied by units of measurement, as in "10 cm".

Measurements

Scalar quantities have a size or magnitude only and need no other information to specify them. Thus, 10 cm, 50 sec, 7 litres and 3 kg are all examples of scalar quantities. Vector quantities have both a size or magnitude and a direction, called the line of action of the quantity.

Types

Scalar: Volume, Mass, Speed, Velocity, Density, Number of Moles, Angular Frequency. Vector: Acceleration, Velocity, Displacement, Angular Velocity.

Components

Scalar quantities are those that can be described with magnitude only, as opposed to vectors, which include both magnitude and direction components. Distance, speed, and time are all scalars. Displacement is not a scalar, as it involves both the distance and the direction moved from a starting point.

Which is a scalar quantity?

Scalar quantities have a size or magnitude only and need no other information to specify them. Thus, 10 cm, 50 sec, 7 litres and 3 kg are all examples of scalar quantities. (b) Vector quantities have both a size or magnitude and a direction, called the line of action of the quantity.

What is scalar quantity in simple words?

A quantity which does not depend on direction is called a scalar quantity. Vector quantities have two characteristics, a magnitude and a direction. Scalar quantities have only a magnitude. ... For scalars, you only have to compare the magnitude.

What is scalar and vector quantity?

A quantity that has magnitude but no particular direction is described as scalar. A quantity that has magnitude and acts in a particular direction is described as vector.

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Explanation:

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