Elevation (ft) + 0 2 10 2.9. The soil specimen in Fig. P2.9 has three layers with different permeabilities, k₁ = 1 x 10-3 cm/s, k₂ = 5 x 10-3 cm/s, and k3 = 1 x 10-4 cm/s. Determine (a) the flow rate through the specimen, and (b) total hydraulic heads at points A, B, C, and D. 8 5 ft n = 0.3 K₁ BK₂ C K D 0 Datum Fig. P2.9 +3 +2 +5 +8