The rectangular channel shown in the following figure has a width of 10 ft and transports water at 19,229 ft3/min. If the elevation of the channel bed drops by 0.75 ft, determine the specific energy (in ft) after the depression. Provide your answer with two decimals. Note: The solution method is the same as for a rise except the Δh term will be negative to account for the depression

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Group B: 50-cm well penetrating a confined aquifer is pumped at a rate of a 0.035 m^3/s. The drawdown at an observation well at a radial distance of 100 m is as follows: Calculate the aquifer parameters S and T using Jacob method? T (hr) s(m) 3.5 4 0.3 0.5 1.5 2 3 7 10 30 70 90 100 170 200 250 0.08 0.10 0.25 0.30 0.34 0.37 0.41 0.50 0.55 0.75 0.88 0.93 0.95 1.04 1.08 1.13

Consider the spring mass system shown below. The natural frequency of the system is 4rad/s for a single spring k,. To double the natural frequency of the system, the spring constant k, of second spring in N/m is m = 2kg

36 The flow net constructed for the dam is shown in the figure below. Taking the coefficient of permeability as 3.8 x 10-6 m/s, the quantity of flow (in cm³/s) under the dam per meter of dam is. 6.3 m T ! 9.4 m 17.2 m I 1.6 m T - 50 m - Impermeable Stratum

Water flows in a rectangular channel at a depth of 1.5 m. A 30 cm high smooth hump produces a drop of 15 cm in the water surface elevation. Neglecting losses, estimate the discharge per unit width of the channel. Solution: Refer to Figure 2.18. Let suffixes 1 and 2 refer to sections upstream of the hump and on the hump respectively as indicated in the figure. Energy Line V Е, У, 1 0.15 m √₂ Hump AZ = 0.30 m 2