Kilogram per cubic meter

Ounce (avoirdupois) per cubic kilogram per cubic meter 1.001 154... 

Pound per cubic foot kilogram per cubic meter 16.018 46... 

Density and Relative Density. Density is mass per unit volume and in SI is normally expressed as kilograms per cubic meter (density of water = 1000 kg/m or 1 g/cm ). The term specific gravity was formerly the accepted dimensionless value describing the ratio of the density of sohds and Hquids to the density of water at 4°C or for gases to the density of ak at standard conditions. The term specific gravity is being replaced by relative mass density, a more descriptive term. 

Pounds per cubic foot Kilograms per cubic meter 16.018... 

To convert kilograms per cubic meter to pounds per cubic foot, multiply by 0.06243. 

NOTE Difficulties of accurately characterizing many of the specimens mean that many of the values presented here must he regarded as being of order of magnitude only For some materials, actual measurement may he the only way to obtain data of the required accuracy To convert kilograms per cubic meter to pounds per cubic foot, multiply hy 0.062428 to convert kilojoules per Idlogram-kelvin to British thermal units per pound-degree Fahrenheit, multiply hy 0.23885. 

NOTE AU groups are dimensionless. To convert dynes per square centimeter to joules per square meter, miJtiply by 10" to convert poises to newton-seconds per square meter, multiply by 10" to convert feet per second to meters per second, multiply by 0.3048 to convert feet to meters, multiply by 0.3048 to convert pounds per minute-foot to kilograms per second-meter, multiply by 0.025 to convert pounds per cubic foot to kilograms per cubic meter, multiply by 16.019 to convert pounds per minute squared to kilograms per second squared, multiply by 1.26 X lO"" to convert British thermal units per hour to kilojoules per second, multiply by 2.63 X lO"" and to convert British thermal units per hour-square foot-degree Fahrenheit per foot to joules per square meter-second-kelvin per meter, multiply by 1.7307. 

FIG. 14-54 Pressure drop for Flexipac packing, sizes No, 1 and No.. 3, Air-water system at atmospheric pressure. Liquid rate in gallons per minute-square foot. To convert (feet per second) (younds per cubic foot) " to (meters per second) (kilograms per cubic meter) " , multiply by 1,2199 to convert gallons per minute-square foot to pounds per hour-square foot, multiply by 500 to convert inches of water per foot to millimeters of water per meter, multiply by 83,31 and to convert pounds per hour-square foot to kilograms per second-square meter, multiply by 0,001.356, Coutiesy Koch Engineering Co., Wichita, Kansas.)... 

Bulk den.situ. This is the weight per unit of volume of a quantity of solid particles, usually expressed in kilograms per cubic meter (pounds per cubic foot). It is not a constant and can be decreased by aeration and increased by vibration or mechanical packing. 

NOTE To convert cubic feet to cubic meters, multiply by 0.028.32 to convert horsepower to kilowatts, multiply by 0.7457 to convert pounds per cubic foot to kilograms per cubic meter, multiply by 16.02 to convert tons per hour to kilograms per second, multiply by 0.252 to convert revolutions per minute to radians per second, multiply by 0.1047 to convert pounds per minute to kilograms per minute, multiply by 0.45 15 and to convert horsepower per ton to kilowatts per metric ton, multiply by 0.8. 152. 

FIG. 21-8 Standardized leaf-spring mechanical oscillating conveyor with selection charts. Multiply pounds per cubic foot hy 16.02 to get kilograms per cubic meter multiply feet by 0.3048 to get meters. (FMC Corporation, Materials Handling Systems Division. )... 

To convert British thermal units per pound to joules per kilogram, multiply hy 2326 to convert pounds per cubic foot to kilograms per cubic meter, multiply by 16.02. 

Tlic density (p) of a substance is tlic ratio of its mass to its volume and may be expressed in units of pounds per cubic foot (Ib/ft ) or kilograms per cubic meter (kg/nv ). For solids, density can be determined easily by placing a known mass of the substance in a liquid and measuring tlie displaced volume. The density of a liquid can be measured by weighing a known volume of the liquid in a gradmitcd cylinder. For gases, tlie ideal gas law (to be discussed in Section 4.6) can be used to calculate tlie density from tlie temperature, pressure, and molecular weight of tlie gas. 

JHll/APL Johns Hopkins Univ, kg/cu m kilograms per cubic meter... 

Air weighs about 81b per 100 cubic feet. Find its density in (a) grams per cubic foot, (b) grams per liter, and (c) kilograms per cubic meter. 

Be very cautious when using the Bernoulli equation. Pay special attention to the subscripts and the units. When in doubt with what units to use, always revert to SI units, where the pressure will be given in pascals, the speed in meters per second, and the density in kilograms per cubic meter. 

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