Three pipes are connected in parallel. The difference in heads in each pipe is 40 m. Pipes Diameter (cm) Length (m) Friction factor 1 15 500 0,02 2 10 450 0,03 3 20 800 0.025 4. If a fourth pipe 25 cm in diameter and length 1100 m with f = 0.018 were attached at the end of the three pipes, what would be the velocity of the water at the fourth pipe?

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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.