Page 25 - Appplied Mathematics for the Petroleum and Other Industries, 5th Edition

110 SOME PHYSICAL QUANTITIES AND THEIR MEASUREMENT

TABLE 5.1
Conventional and Metric (SI) Units of Measurement
for Some Physical Quantities

Conventional Metric (SI)

Quantity Unit Symbol Unit Symbol

Fundamental Quantities
Length foot ft metre m
Mass pound lb kilogram kg

Time second sec second s
Temperature degree Fahrenheit °F degree Celsius °C
degree Rankine °R Kelvin K
Electrical current ampere A ampere A

Amount of substance mole mol mole mol
Luminous intensity candela cd candela cd

Derived Quantities
Acceleration feet per second ft/sec metre per second m/s 2
2
per second per second
2
Area square feet ft square metre m 2
Density pound per cubic lb/ft kilogram per kg/m
3
3
foot cubic metre
Electrical potential volt V volt V
Electrical resistance ohm Ω ohm Ω
Electrical capacitance farad F farad F
Energy kilowatt-hour kWh kilowatt-hour kWh
Force pound-force lb f newton N

Frequency hertz Hz hertz Hz
Power foot-pound per joule per second J/s
second ft-lb/sec watt W
horsepower hp
watt W
Pressure pound-force per psi pascal Pa
square inch
Petroleum Extension-The University of Texas at Austin
Velocity foot per second ft/sec metre per second m/s
3
3
Volume cubic foot ft cubic metre m
gallon gal
barrel bbl
Work foot-pound ft-lb joule J
newton-metre N•m