## Which statement about scalar quantities is true?

Scalar numbers have both magnitudes and directions. Base units must be used to represent scale quantities. You can add scalar quantities to vector quantities by using trigonometry rules. Rules of trigonometry allow you to add scalear quantities to other scalar amounts.

**Which of the following amounts is a scalar number? **

Scalar amounts are defined by a magnitude without any applicable direction. Vector quantities, on the other hand, must have both magnitude AND direction of action. Common scalar quantities include distance, speed and mass. Common vector quantities include force, velocity and displacement.

** What are the characteristics of scalar numbers? **

A scalar quantity is a quantity that does not depend upon direction. Two characteristics are present in vector quantities: a magnitude as well as a direction. Scalar quantities only have a magnitude. You must compare the magnitude and direction when comparing vector quantities of the exact same type.

### Which of the following is not an integer quantity?

Weight=massxacceleration due gravity and weight is also a vector quantum because acceleration due gravitation is a vector amount. The answer is (d). Notable: One must be capable of distinguishing between Scalar quantities and Vector quantities as described in the hint.

**Is speed an scalar quantity **

Speed is a scalar quantity that indicates the speed at which an object travels distance. The distance per unit of time is called the average speed. Speed does not know the direction. Speed, on the other hand is a vector quantity. It is direction-aware.

**Why is speed a scalar **

A scalar quantity is one that has magnitude or size. Examples: speed, distance. The vector quantities can have both magnitude or direction. Examples include force, velocity, and field strength. Speed is not a vector quantity and has only magnitude.

## Is torque a scalar quantity?

Torque can be described as a vector quantity. The direction of the torque vector is dependent on the direction that the force exerted on the axis. Static torque is one that does not cause an angular acceleration.

**How can you convert rpm into NM? **

- Torque (lb.in)=63,025 x Power (HP) / Speed (RPM)
- Power (HP)=Torque (lb.in) x Speed (RPM) / 63,025.
- Torque (N.m)=9. 5488 x Speed (RPM )
- Power (kW)=Torque (N.m) x Speed (RPM) / 9.5488.

)