The rate of growth of a bacterial colony is related to the square of the number of bacteria present at any point in time t. If there are initially 100 bacteria. They increased to 200 in ten minutes. They will reach 300 in how many more minutes.

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Consolidation parameters

Consolidation is the process of expulsion of pore water present in the voids of soil solids under the pressure of the applied load. This is a quick process in the case of coarse-grained soils since the permeability is high due to the presence of more voids, while it is a slow and gradual process in the case of clayey soil as the permeability of clay is less. An example of consolidation is the settlement of soil under a building due to the load coming from the building.