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PLZ HELP!! FOE A TEST

23. Quantities that can be described completely by their magnitude or size are called vector quantities. (5 points)
True
False

Sagot :

machmillerg

Answer:

False

Explanation:

Vector has a magnitude and direction.

A scalar is just a magnitude or size.

The answer is false.

What is scalar and vector quantities?

Scalar quantity:

  • The scalar quantity will have only the magnitude ( how much or size).
  • These scalar quantity are one dimensional.
  • These can be represented only by calculating the changes in the magnitude.
  • If we need to change the value of scalar we are not able to change because it has no directions to determine the values of the quantity.
  • If we have to perform any kind of mathematical operation, i.e., scalar with scalar we get scalar but when we did the mathematical operation with the scalar and vector then we get the answer is in the vector.
  • some of the scalar quantities are as follows:  

        Speed, Mass, length, distance, power, energy, work.

Vector quantity:

  • The vector quantity will have both magnitude and direction.
  • The vector quantities are one dimensional, 2 dimensional, else can also be 3 dimensional.
  • Vector quantities can be changed or determined both by the magnitude and direction. If we change the adjacent angles then there changes will occur in the direction.
  • We can perform any kind of mathematical operation.
  • Some of the vector quantities are:                                                                                                    Displacement, velocity, acceleration, force, weight, friction, momentum.

Hence, Option B is the correct answer.

Learn more about the scalar and vector quantities,

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