What is the ground water travel time from well MW1 to well MW2 (days) according to the following figure's condition? (Hint: Solve by Darcy's Law) - TOC stands for Top of Casing, and is an elevation with respect to a common datum DTW stands for Depth to water, which is the distance from the TOC to the water table MW1 MWI MW2 L = K= TOC (ft) 900 ft 18 ft/day 0.24 1052.6 1045.3 DTW (ft) 12.5 14.2 MW2

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Unit Conversion

Standard units are also called SI units. SI units are used for measuring a physical quantity satisfying certain conditions. There are two types of units: fundamental units and derived units. Fundamental units are physical quantities that are independent, that is, they do not depend on other quantities like mass, length, or time. There are plenty of quantities in our lives which need to be measured and compared. Measuring is the comparison of a particular physical quantity with its reference value. A unit is a measure of a fixed physical quantity. A physical quantity is the product of a unit and the numerical value we need to compare with.