Question

Pressure cannot be expressed in units
A. gal
B. pascal
C. bar
D. Torr

Answer 1

Answer:

Pressure is sometimes expressed in grams-force or kilograms-force per square centimetre (g/cm2 or kg/cm2) and the like without properly identifying the force units. But using the names kilogram, gram, kilogram-force, or gram-force (or their symbols) as units of force is expressly forbidden in SI.

Answer 2

Answer:

Pressure cannot be expressed in units is gal

Explanation:

Step 1: The torr (symbol: Torr) is a unit of pressure based on an absolute scale, defined as exactly 1760 of a standard atmosphere (101325 Pa).

Step 2: 5 units of pressure are bar, atm, Pascal, kilo Pascal and torr. Pressure is defined as the perpendicular force which is applied in an unit area.

Step 3: We can say one Newton is one kgm/s². Pascal is a very small pressure unit and is often used with different prefixes. Common multiples include hectopascal (1 hPa = 100 Pa), kilopascal (1 kPa = 1 000 Pa) and megapascal (1 MPa = 1 000 000 Pa).

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