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Questions and Answers
What defines a scalar quantity?
What defines a scalar quantity?
- It has magnitude only. (correct)
- It can be represented as a vector.
- It represents speed in a specific direction.
- It has both magnitude and direction.
Which of the following is considered a scalar quantity?
Which of the following is considered a scalar quantity?
- Velocity
- Mass (correct)
- Acceleration
- Force
What is a unit vector?
What is a unit vector?
- A vector with zero magnitude.
- A vector with magnitude greater than one.
- A vector with both direction and magnitude.
- A vector whose magnitude is unity. (correct)
Which of the following correctly describes equal vectors?
Which of the following correctly describes equal vectors?
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Like vectors are characterized by which of the following?
Like vectors are characterized by which of the following?
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Which statement about vector quantities is true?
Which statement about vector quantities is true?
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What differentiates scalar quantities from vector quantities?
What differentiates scalar quantities from vector quantities?
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Which of the following options is NOT a scalar quantity?
Which of the following options is NOT a scalar quantity?
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Study Notes
Scalar Quantities
- Scalar quantities possess only magnitude with no directional component.
- Examples include:
- Length
- Mass
- Time
- Distance
- Volume
- Density
- Temperature
- Speed
Vector Quantities
- Vector quantities are defined by both magnitude and direction.
- They play a significant role in understanding physical phenomena where direction matters.
Unit Vector
- A unit vector is characterized by a magnitude of one.
- It indicates direction without affecting the scale of measurement.
Equal Vectors
- Equal vectors are defined as vectors that are parallel, share the same direction, and have identical magnitudes.
- They represent the same physical quantity despite location differences.
Like Vectors
- Like vectors are parallel and have the same direction (sense) but differ in magnitude.
- They provide insight into forces acting in the same direction but with varying strengths.
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