Is pressure scalar?

1 Answer
Jan 17, 2018

Pressure is a scalar because it's quantity is described with a magnitude and not with a direction.

Explanation:

Scalars are quantities that are described by a numerical value.
To describe a scalar, we only need to know thier amount not their direction (e.g. temperature#-># 18 degrees Celsius, pressure #-># 9 866 Pa; other examples of scalars are speed, length, volume, mass, time, work, energy...)
• Scalar quantities are described by real numbers.
Vectors are quantities that are described by a numerical value and a direction. (e.g. velocity #-># 30 m/sec, East; displacement #-># 6 mi., North; other examples of vectors are moment, force, acceleration...)
https://upload.wikimedia.org/wikipedia/commons/8/88/Vector_by_Zurekssvg
http://s3-ap-southeast-1.amazonaws.com/subscriber.images/physics/2015/12/19113944/SCALAR-AND-VECTOR1.png