﻿ Can you associate vectors with: (a) length of a wire bent into a loop(b) a plane area(c) a sphere? Explain. from Physics Motion in A Plane Class 11 Manipur Board

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Can you associate vectors with:
(a) length of a wire bent into a loop
(b) a plane area
(c) a sphere? Explain.

(a) Yes, the direction of the length of a wire bent in the form of a loop is along the tangent to the loop.

(b) Yes, area is a vector whose direction is perpendicular to the plane of area.

(c) No, we cannot associate vector with the volume of the sphere.

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Give three examples of scalar quantities.

Mass, temperature and energy
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What is a scalar quantity?

A physical quantity that requires only magnitude for its complete specification is called a scalar quantity.
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What is a vector quantity?

A physical quantity that requires direction along with magnitude, for its complete specification is called a vector quantity.
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Give three examples of vector quantities.

Force, impulse and momentum.
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What are the basic characteristics that a quantity must possess so that it may be a vector quantity?

A quantity must possess the direction and must follow the vector axioms. Any quantity that follows the vector axioms are classified as vectors.

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