Define Scalar and Vector quantity.

Define Scalar and Vector quantity. 
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Answer :

Scalar Quantity: A physical quantity having only magnitude but no direction is called as scalar quantity

Vector Quantity: A physical quantity having both magnitude as well as direction is called as vector quantity. 
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Related questions

is upthrust a scalar or vector quantity?

Description : is upthrust a scalar or vector quantity?

Last Answer : You've already told us its direction. As soon asyou tell us its magnitude, we'll have a vector.

Why vector quantity cannot be subtracted and added like scalar?

Description : Why vector quantity cannot be subtracted and added like scalar?

Last Answer : Mainly because they aren't scalar quantities.A vector in the plane has two components, an x-component and ay-component. If you have the x and y components for each vector,you can add ... istheir lengths.Similarly, a vector in space has three components; you can addeach of the components separately.

Stress can be defined as ______ quantity. (1) Scalar (2) Vector (3) Phasor (4) Tensor

Description : Stress can be defined as ______ quantity. (1) Scalar (2) Vector (3) Phasor (4) Tensor

Last Answer : (4) Tensor Explanation: Stress is defined as Resisting force per unit area of an element, on which load is applied. Stress is always perpendicular to a cross-section in the element. ... vector addition). It is a tensor quantity because it describes things happening in two directions simultaneously.

Work done upon a body ______. (1) only a vector quantity (2) only a scalar quantity (3) both vector and scalar (4) neither vector nor scalar

Description : Work done upon a body ______. (1) only a vector quantity (2) only a scalar quantity (3) both vector and scalar (4) neither vector nor scalar

Last Answer : (2) only a scalar quantity

Displacement is a A. scalar quantity B. vector quantity C. base quantity D. derived quantity

Description : Displacement is a A. scalar quantity B. vector quantity C. base quantity D. derived quantity

Last Answer : vector quantity

What is vector quantity and what is scalar quantity?

Description : What is vector quantity and what is scalar quantity?

Last Answer : Vector quantity A quantity, which has both the direction and magnitude is said to be a vector quantity. Examples are force, emf, current etc. Scalar quantity A scalar quantity is that, which has only magnitude but no direction. Examples are temperature, mass, volume etc.

The magnetic vector potential is a scalar quantity. a) True b) False

Description : The magnetic vector potential is a scalar quantity. a) True b) False

Last Answer : b) False

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Description : Quantities that describe both magnitude & direction  a. Physical Quantity  b. Scalar Quantity  c. Vector Quantity  d. None of the above

Last Answer : Vector Quantity

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Description : Which is true:  a. Energy is a scalar quantity  b. Energy is a vector quantity  c. Energy is vector & scalar  d. None of the above

Last Answer : Energy is a scalar quantity

The electric intensity is a: (a) Scalar quantity (b) Vector quantity (c) Physical quantity (d) None of above

Description : The electric intensity is a: (a) Scalar quantity (b) Vector quantity (c) Physical quantity (d) None of above

Last Answer : (b) Vector quantity

As defined in physics, work is: w) a scalar quantity x) always a positive quantity y) a vector quantity z) always zero

Description : As defined in physics, work is: w) a scalar quantity x) always a positive quantity y) a vector quantity z) always zero

Last Answer : ANSWER: W -- A SCALAR QUANTITY

Stress can be defined as _____ quantity. (1) Scalar (2) Vector (3) Phasor (4) Tensor

Description : Stress can be defined as _____ quantity. (1) Scalar (2) Vector (3) Phasor (4) Tensor

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In homogeneous coordinates value of ‘h’ is consider as 1 & it is called….. a.Magnitude Vector b.Unit Vector c.Non-Zero Vector d.Non-Zero Scalar Factor

Description : In homogeneous coordinates value of ‘h’ is consider as 1 & it is called….. a.Magnitude Vector b.Unit Vector c.Non-Zero Vector d.Non-Zero Scalar Factor

Last Answer : d.Non-Zero Scalar Factor

scalar, Vector The sign Example Day.

Last Answer : scalar Rashih That All Physical Rashike Just The value By Absolutely Revealed To do Go , direction Of instruction Need Not at all Them Scalar The amount Says. Length , mass , speed , work , ... amount Says. Move , velocity , acceleration , force , electricity Intensity Etc. Vector The sign Example

The expression 1/√2 (i + j) is a  (A) unit vector  (B) null vector  (C) vector of magnitude  (D) scalar

Description : The expression 1/√2 (i + j) is a  (A) unit vector  (B) null vector  (C) vector of magnitude  (D) scalar

Last Answer : The expression 1/√2 (i + j) is a (A) unit vector (B) null vector (C) vector of magnitude √2 (D) scalar

State with reasons, whether the following algebraic operations with scalar and vector physical quantities are meaningful.

Description : State with reasons, whether the following algebraic operations with scalar and vector physical quantities are meaningful.

Last Answer : State with reasons, whether the following algebraic operations with scalar and vector physical quantities are ... scalars, v. Adding any two vectors.

What is the difference between a scalar and a vector?

Description : What is the difference between a scalar and a vector?

Last Answer : What is the difference between a scalar and a vector ?

The curl of a curl of a vector gives a a) Scalar b) Vector c) Zero value d) Non zero value

Description : The curl of a curl of a vector gives a a) Scalar b) Vector c) Zero value d) Non zero value

Last Answer : b) Vector

The divergence of a vector is a scalar. State True/False. a) True b) False

Description : The divergence of a vector is a scalar. State True/False. a) True b) False

Last Answer : a) True

Which of the following is not true? a) A . (B . C) = scalar value b) A . (B x C) = scalar value c) A x (B . C) = scalar value d) A x (B x C) = vector value

Description : Which of the following is not true? a) A . (B . C) = scalar value b) A . (B x C) = scalar value c) A x (B . C) = scalar value d) A x (B x C) = vector value

Last Answer : c) A x (B . C) = scalar value

The dot product of two vectors is a scalar. The cross product of two vectors is a vector. State True/False. a) True b) Fals

Description : The dot product of two vectors is a scalar. The cross product of two vectors is a vector. State True/False. a) True b) Fals

Last Answer : a) True

What the difference between vector and scalar quantities is?

Description : What the difference between vector and scalar quantities is?

Last Answer : A vector has both strength and direction, a scalar quantity can be described using only 1 quantity, magnitude. Example of vector quantities are velocity, acceleration etc. Examples of scalar quantities are time, energy and volume since they only represent magnitude and no direction.

Define force system. Explain three force systems with sketches.

Description : Define force system. Explain three force systems with sketches. 

Last Answer : When two or more forces acting on a body, they are said to form a system of forces or force system.  Force systems with sketches: 1. Coplanar Collinear force system: The force system in ... planes and they do not possess one single point of concurrency are known as General force system.

Define free body diagram

Description : Define free body diagram

Last Answer : When all active and reactive forces acting on the free body are shown and thus the diagram obtained is called as „free body diagram‟. 

Define force and state its effects.

Description : Define force and state its effects.

Last Answer : Force: It is an external agency either push or pull which changes or tends to change the state of rest or of uniform motion of a body, upon which it acts. Effects of force : i) It may change the state ... It may turn or rotate the body on which it acts. iv) It may deform the body on which it acts.

Define centroid and centre of gravity.

Description : Define centroid and centre of gravity.

Last Answer : Centroid: It is defined as the point through which the entire area of a plane figure is assumed to act, for all positions of the lamina. e. g. Triangle, Square.  Centre of Gravity: It is defined as ... of the body is assumed to act, irrespective of the position of a body. e.g. Cone, Cylinder.

Which of the following is scalar quantity a.Area of triangle b.Displacement of a particle c.Acceleration of car d.Force of friction e.Velocity a gear

Description : Which of the following is scalar quantity a.Area of triangle b.Displacement of a particle c.Acceleration of car d.Force of friction e.Velocity a gear

Last Answer : a. Area of triangle

Complete the table. Physical Quantity - Scalar

Description : Complete the table. Physical Quantity - Scalar

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Description : Pick out the scalar quantity (a) Force (b) Pressure (c) Velocity (d) Acceleration

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Description : Choose the only scalar quantity from the following: (a) Energy (b) Torque (c) Momentum (d) Force

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Last Answer : (3) Angular momentum Explanation: The electrostatic potential at any point in an electric field is defined as the work done in bringing a unit positive charge from infinity to that point against the electric force of the field.

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Description : Which of the following is a scalar quantity ? (1) Velocity (2) Force (3) Angular momentum (4) Electrostatic potential

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Which of the following is a scalar quantity?

Description : Which of the following is a scalar quantity? a) Electric displacement density b) Potential in electric field c) Electric field strength d) None of the above

Last Answer : b) Potential in electric field

State law of machine and explain its significance.

Description : State law of machine and explain its significance.

Last Answer : When we are using a machine to lift a weight, the work done is governed by the Law of Machine, which states that when on a machine (p) an effort is applied It has to be equal to the weight (w) of the load it will be lifting. Hence, p = mw + c where m and c are positive constants of the machine.

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Description : State two limitations of Lami’s theorem.

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State four laws of static friction.

Description : State four laws of static friction. 

Last Answer : 1. The frictional force is always acts tangential to the plane of contact and in the opposite direction of motion. 2. When the body is in limiting equilibrium, the ratio of limiting friction to ... is a self-adjusting force and it increases as the applied force increases up to limiting friction. 

State Law of polygon of forces.

Description : State Law of polygon of forces.

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Write relation between resultant and equilibrant.

Description : Write relation between resultant and equilibrant.

Last Answer : Equilibrant is always equal in magnitude, opposite in direction and collinear to the resultant.

Write two advantages and two disadvantages of friction.

Description : Write two advantages and two disadvantages of friction.

Last Answer : They change the direction  of the objects  They change the size of the objects

State characteristics of force.

Description : State characteristics of force.

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Define a super scalar processor?

Description : Define a super scalar processor?

Last Answer : It is a CPU that implements a form of parallelism called Instruction level parallelism with a single processor.

Which of the following is a vector quantity?

Description : Which of the following is a vector quantity?

Last Answer : Which of the following is a vector quantity? A. Current density B. Current C. Wattless current D. Power

A vector is a quantity with magnitude and blank?

Description : A vector is a quantity with magnitude and blank?

Last Answer : Apex- direction

Acceleration is a vector quantity true or false?

Description : Acceleration is a vector quantity true or false?

Last Answer : TRUE

True or false acceleration is a vector quantity?

Description : True or false acceleration is a vector quantity?

Last Answer : TRUE

Is mass a vector quantity?

Description : Is mass a vector quantity?

Last Answer : It isn't, because a mass can only be positive - there are no negative masses. Also mass is only referring to one thing and this doesn't give as much information as a vector quantity. Mass is scalar.

A vector is a quantity with magnitude and ___?

Description : A vector is a quantity with magnitude and ___?

Last Answer : A vector is described by magnitude and direction (a scalar has only magnitude).

Pick out the vector quantity (a) Energy (b) Angular momentum (c) Angle (d) None of these

Description : Pick out the vector quantity (a) Energy (b) Angular momentum (c) Angle (d) None of these

Last Answer : Ans:(b)

Choose the only vector quantity from the following: (a) Energy (b) Length (c) Density (d) Torque

Description : Choose the only vector quantity from the following: (a) Energy (b) Length (c) Density (d) Torque

Last Answer : Ans:(d)