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2. Coal analysis - Wikipedia

   en.wikipedia.org/wiki/Coal_analysis

   Thus, coals must be subjected to a float-sink test in the laboratory, which will determine the optimum particle size for washing, the density of the wash liquid required to remove the maximum ash value with the minimum work. Float-Sink testing is achieved on crushed and pulverised coal in a process similar to metallurgical testing on metallic ore.

3. Drag curve - Wikipedia

   en.wikipedia.org/wiki/Drag_curve

   Drag curve. The drag curve or drag polar is the relationship between the drag on an aircraft and other variables, such as lift, the coefficient of lift, angle-of-attack or speed. It may be described by an equation or displayed as a graph (sometimes called a "polar plot"). [1] Drag may be expressed as actual drag or the coefficient of drag.

4. Surface-area-to-volume ratio - Wikipedia

   en.wikipedia.org/wiki/Surface-area-to-volume_ratio

   The surface-area-to-volume ratio has physical dimension inverse length (L −1) and is therefore expressed in units of inverse metre (m -1) or its prefixed unit multiples and submultiples. As an example, a cube with sides of length 1 cm will have a surface area of 6 cm 2 and a volume of 1 cm 3. The surface to volume ratio for this cube is thus.

5. Kitchen work triangle - Wikipedia

   en.wikipedia.org/wiki/Kitchen_Work_Triangle

   Kitchen triangle between fridge, stove and sink. The areas of a kitchen work triangle is a concept used to determine efficient kitchen layouts that are both aesthetically pleasing and functional. The primary tasks in a home kitchen are carried out between the cook top, the sink and the refrigerator. These three points and the imaginary lines ...

6. Relative density - Wikipedia

   en.wikipedia.org/wiki/Relative_density

   Relative density ( ) or specific gravity ( ) is a dimensionless quantity, as it is the ratio of either densities or weights where is relative density, is the density of the substance being measured, and is the density of the reference. (By convention , the Greek letter rho, denotes density.) The reference material can be indicated using ...

7. Displacement (fluid) - Wikipedia

   en.wikipedia.org/wiki/Displacement_(fluid)

   Displacement (fluid) Measurement of volume by displacement, (a) before and (b) after an object has been submerged. The amount by which the liquid rises in the cylinder (∆V) is equal to the volume of the object. In fluid mechanics, displacement occurs when an object is largely immersed in a fluid, pushing it out of the way and taking its place.