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3. (a) Explain how excess groundwater recharge can be dangerous for our environment. [6 Marks] (b) A well with...

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[6 Marks] (b) A well with ( 30 mathrm{~cm} ) diameter and depth of ( 50 mathrm{~m} ) below the static water table is av 

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3. (a) Explain how excess groundwater recharge can be dangerous for our environment. [6 Marks] (b) A well with 30 cm diameter and depth of 50 m below the static water table is available in unconfined aquifer. Two test wells exist in 40m and 200 m distance from the main well. After 36 hr of pumping with a discharge 4.0 m³/minute the drawdown in the former test well is 2.7 m and in the Later one is 1.2m. i) Illustrate the aquifer system using a sketch. ii) Determine radius of zero draw-down. iii) Find coefficient of permeability. iv) Compute draw-down in the pumped well. v) What is the transmissibility of the aquifer? You may find following expression useful: ak H²-h² _h Q Ln R [19 Marks] [25 MARKS]

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Essentials of Statistics for Business and Economics

Essentials of Statistics for Business and Economics

ISBN: 978-1305081598

7th edition

Authors: David Anderson, Thomas Williams, Dennis Sweeney, Jeffrey Cam

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Posted Date: August 12, 2022 03:44:49
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